Shopping car radio bluetooth transmitter for iphone has never been easy. You may come many of website, read car radio bluetooth transmitter for iphone reviews, check the price... It will really makes you headache and tired. Don't worry! I've found ways to make it less painful. Let's find in below article.

Shopping car radio bluetooth transmitter for iphone has never been easy. You may come many of website, read car radio bluetooth transmitter for iphone reviews, check the price… It will really makes you headache and tired. Don’t worry! I’ve found ways to make it less painful. Let’s find in below article.

Best car radio bluetooth transmitter for iphone

Product Features Editor's score Go to site
Handsfree Call Car Charger,Wireless Bluetooth FM Transmitter Radio Receiver&Mp3 Music Stereo Adapter,Dual USB Port Charger Compatible for All Smartphones,Samsung Galaxy,LG,HTC,etc. Handsfree Call Car Charger,Wireless Bluetooth FM Transmitter Radio Receiver&Mp3 Music Stereo Adapter,Dual USB Port Charger Compatible for All Smartphones,Samsung Galaxy,LG,HTC,etc.
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VicTsing Bluetooth FM Transmitter, Wireless In-Car Audio Adapter /w USB Port, Support AUX Input 1.44 Inch Display TF Card Slot - Silver Grey VicTsing Bluetooth FM Transmitter, Wireless In-Car Audio Adapter /w USB Port, Support AUX Input 1.44 Inch Display TF Card Slot - Silver Grey
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VicTsing Bluetooth FM Transmitter for Car, Wireless Bluetooth Car Adapter Car Kit with Hand-Free Calling and 1.44 LCD Display, Music Player Support TF Card USB Flash Drive AUX Input/Out VicTsing Bluetooth FM Transmitter for Car, Wireless Bluetooth Car Adapter Car Kit with Hand-Free Calling and 1.44 LCD Display, Music Player Support TF Card USB Flash Drive AUX Input/Out
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VicTsing (Upgraded Version) QC3.0 Bluetooth FM Transmitter for Car, Wireless Radio Adapter Hands-Free Car Kit with Power On/Off Switch and Large Display, Dual USB Ports, U Disk, TF Card MP3 Player VicTsing (Upgraded Version) QC3.0 Bluetooth FM Transmitter for Car, Wireless Radio Adapter Hands-Free Car Kit with Power On/Off Switch and Large Display, Dual USB Ports, U Disk, TF Card MP3 Player
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Nulaxy Wireless in-Car Bluetooth FM Transmitter Radio Adapter Car Kit W 1.44 Inch Display Supports TF/SD Card and USB Car Charger for All Smartphones Audio Players-KM18 Nulaxy Wireless in-Car Bluetooth FM Transmitter Radio Adapter Car Kit W 1.44 Inch Display Supports TF/SD Card and USB Car Charger for All Smartphones Audio Players-KM18
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Bluetooth FM Transmitter for Car, 5.0 Wireless Bluetooth FM Radio Adapter Music Player /Car Kit and 2 USB Ports Charger Support USB Drive Bluetooth FM Transmitter for Car, 5.0 Wireless Bluetooth FM Radio Adapter Music Player /Car Kit and 2 USB Ports Charger Support USB Drive
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VicTsing Bluetooth FM Transmitter for Car, Wireless in-Car Radio Transmitter, Music Player Car Kit with Power Off, Stereo Sound, Hands-Free Calls and 2 USB Ports Support USB Flash Drive VicTsing Bluetooth FM Transmitter for Car, Wireless in-Car Radio Transmitter, Music Player Car Kit with Power Off, Stereo Sound, Hands-Free Calls and 2 USB Ports Support USB Flash Drive
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Comsoon Bluetooth FM Transmitter, [Blue Ambient Ring Light] Wireless Radio Car Receiver Adapter Kit with Hands-Free Calling, Dual USB Charger 5V/2.4A & 1A, Support TF/SD Card, USB Disk Comsoon Bluetooth FM Transmitter, [Blue Ambient Ring Light] Wireless Radio Car Receiver Adapter Kit with Hands-Free Calling, Dual USB Charger 5V/2.4A & 1A, Support TF/SD Card, USB Disk
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VicTsing (Upgraded Version) 1.8 VicTsing (Upgraded Version) 1.8" Color Display Bluetooth FM Transmitter for Car, Wireless Radio Transmitter Adapter with EQ Mode, Power Off, 3 USB Ports, 4 Music Playing, Hands-Free Calls, AUX Input
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(Upgraded Version) Bluetooth FM Transmitter, Sumind Wireless Radio Adapter Hands-Free Car Kit with 1.7 Inch Display, QC3.0 and Smart 2.4A Dual USB Ports, AUX Input/Output, TF Card Mp3 Player (Upgraded Version) Bluetooth FM Transmitter, Sumind Wireless Radio Adapter Hands-Free Car Kit with 1.7 Inch Display, QC3.0 and Smart 2.4A Dual USB Ports, AUX Input/Output, TF Card Mp3 Player
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1. Handsfree Call Car Charger,Wireless Bluetooth FM Transmitter Radio Receiver&Mp3 Music Stereo Adapter,Dual USB Port Charger Compatible for All Smartphones,Samsung Galaxy,LG,HTC,etc.

Feature

DUAL USB CAR CHARGER : 2 USB charging port to charge most USB devices.Input 12v/24v,1A port with USB reading and charge function;smart 3.1 A charge port which can intelligently identify android or iPhone devices and charging.
BLUETOOTH AND MORE COMPATIBILITY : Wireless Bluetooth FM transmitter adapter for car radio/cassette,Transfer Calling / MP3 Music / Cellphone Voices to car radio speaker.(FM range from 87.5 to 108 Mhz). 5% every hour low power consumption when use bluetooth play music. Mobile navigation,Voice broadcast . Compatible for iPad,iPhone 8,x,7/ 7 Plus, 6s/ 6s plus, 6/ 6 Plus,Samsung Galaxy ,Google,LG,HTC Huawei Smartphones and device with Bluetooth.
HANDS FREE FUNCTION : Built-in Microphone,Switch to Hands-free mode automatically from music playing status when receiving calls.Answer/Reject/Hand up/Recall all in one key.
CAR BATTERY VOLTAGE FUNCTION : Show 3 seconds voltage when plug into the cigarette port.Always keep battery state of health.Then it turn to automatic play mode.
MUSIC PLAYING FUNCTION : Support Bluetooth Music/ USB Disk/ TF Card / MP3/WMA player. With anti-interference performance and noise suppression (CVC) technology.Listening to music while charging.Automatically connect memorized paired when power on.12-month worry-free Guarantee!

Description

Bluetooth Handsfree Car Charger,FM Transmitter&Music adapter,3.1A Dual USB Port
1.Dual USB :
One is 1A, can charge small screen cellphone,camera and read USB data.Please use pure charge line when use this one charging.
Another is 3.1A, can charge for ipad, big screen cellphone etc.
Input voltage: 12-24V,Output voltage : Max 5V DC/3.1A

2.Frequency Connect:
The device FM frequency is 87.5-108MHz.Please turn car radio channels to one of Frequency 87.5-108.0Mhz.Then plug the device, make sure the car charger keeps the same frequency to the car radio channels:

1.Choose an blank and clear channel in the car audio.
2.Long press the FM transmitter answer key until the LED display flashing.
3.Turning the answer knob adjust the same channel at FM transmitter.
4.Short press the answer key to fix the channel.
5.Connect phone bluetooth or insert the USB/TF card, FM Transmitter will start to play.
Please repeat above steps if has noise interference in the radio.

3.Bluetooth Function :

1.Power on the device, there is a prompt voice : Bluetooth is ready to pair.
2.Turn on smart phone Bluetooth search the name of HY82.
3.After connected, there is a prompt voice Bluetooth connected successfully.
4.Bluetooth function can transfer music from phone to car speakers or answer phone handsfree.

4.Music Function: Please noted the priority play sequence is Bluetooth>TF card>USB

5.Car Battery Voltage Function : For 12V /24V car, voltage display of car battery under 11.5V /23.1V or higher than 14.9V/27.3V means car battery issue.

Features:
1.Weight :45G
2.Screen : LED
3.Support TF card/ USB:32GB
.Working condition:0-60 degree
5.Transmitting distance :< = 5 meter

Package inlucde:
1 x Car Charger
1 x Manual

Warranty:45 days money-back and 12-month, worry-free Guarantee

2. VicTsing Bluetooth FM Transmitter, Wireless In-Car Audio Adapter /w USB Port, Support AUX Input 1.44 Inch Display TF Card Slot - Silver Grey

Feature

Wide Compatibility: VicTsing wireless in-car Bluetooth FM Transmitter is well compatible with iPhone 8,iPhone 8 plus, iPhone X, iphone 7 iphone 7 plus, Samsung, HTC, Blackberry, Sony, Tablet and iPad etc.
1.44'' Large LCD Backlight Display Screen: 1.44 inches screen provides clear display: song name, incoming phone number and voltage of the car battery.
Crystal Sound and Memory Function: Adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind. Our factory had improved the using experience to reduce interference. Also, our FM transmitter could automatically connect the next time if had been connected before.
Faster Charging STATION: Comes with a 5V-2.1A charging port which can charge most USB devices, better charging performance!( Unable to read USB sticks )
More Surprises: Firstly,Supports hands-free calling with microphone; Secondly, supports TF/Micro SD memory card in FAT format up to 32G; Thirdly, supports A2DP; Fourthly, supports MP3/WMA/FLAC format; support AUX output and input.

Description

Goose Neck Design and 1.44 LCD Display Screen
Flexible metal hose, Convenient to adjust its direction.
Large LCD Screen shows the incoming phone number, current song's name and the voltage of the storage battery clearly.
Easy Installation, Plug and play, Easy to use.

Memory Function
Fast Bluetooth pairing. Once paired, the FM transmitter will automatically connect with the last paired smart device when turned on next time.

Clear Sound and Hand-Free Calling
Adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind. Take hands-free calls for pleasurable driving experience!

Specifications:
Bluetooth Version: V3.0 + EDR
Effective Bluetooth Range: 10 meters
FM Frequency: 87.5MHz - 108.0MHZ
Working Voltage: 10V~24V
Audio Input/Output: 3.5mm audio interface
USB Charging Port: 5V/2.1A
Compatible Phone Models: Compatible with iPhone 8,iPhone 8 plus, iPhone X, Samsung, HTC, Blackberry, Sony, Tablet and iPad

NOTE:
1.Please do not violently rotate the head part when using it (the rotation angle shall not exceed 90).
2.Tune it to an unused frequency.
3.The max input & output current of the transmitter varies with charged devices, due to charged devices are able to limit output current automatically.

Package Included:
1x Bluetooth FM transmitter
1x User Manual
1x Audio Cable(1m)

Warranty:
60 days money-back and 12-month, worry-free Guarantee

3. VicTsing Bluetooth FM Transmitter for Car, Wireless Bluetooth Car Adapter Car Kit with Hand-Free Calling and 1.44 LCD Display, Music Player Support TF Card USB Flash Drive AUX Input/Out

Feature

Large Screen. 1.44 inches Large Screen can show incoming call number, voltage level in car battery, volume, FM frequency and song name if you play music from Micro SD card or USB flash disk. Easy to read at night and in the day.
Power Off Switch and Dual USB Ports: One Button to Power off,no need to worry about draining battery. The 5V/2.1A USB port is for fast charging, the other one with USB icon is for reading U disk. Note:Do not charge 2 devices at the same time.
Foldable,Delicate and Convenient. The flexible neck can be adjusted to the perfect viewing angle for convenient use; Memory function makes auto-connect to the last paired phone possible.
Multi Music Playing Modes and HI-FI Stereo Sound. A: Via Bluetooth; B: Via Micro SD card (MP3, WMA, WAV format supported); C: Via USB flash disk; D: Via 3.5mm Audio cable (MP3 player,tablet, etc.) Easily make crystal clear hands-free calls with CVC noise cancellation technology.
Universal Compatibility: VicTsing Bluetooth Transmitter perfectly works with iPhone, iPad, iPod Touch and other Bluetooth enabled devices such as MP3,MP4 Player.

Description

Enjoy music and hand-free calling on the go
You may need an In-car FM transmitter to stream music from your phone, tablet, MP3, MP4, TF card, even USB flash disk to the car stereo system. Take hands-free calls for pleasurable driving experience!

Super Clear Large Screen
The 1.44 inches large screen will show incoming call number, voltage level in car battery, volume, FM frequency and song name if you play music from TF card or USB flash disk.

Easy to Use and Power Off
Plug it into the cigarette lighter socket, turn your car FM radio on, find an empty radio station, and match it to the transmitter. Then you can pair it with your phone for music. It will power off after you long pressing the power button for about 3 seconds.

Play Music in Multi Way
With FM signal, it can play music from your Bluetooth-enabled audio devices to car stereo system. It also support play music from TF card, USB flash disk. The aux-in makes it can stream music from MP3, MP4 and other audio devices with 3.5mm port. Easy to switch between TF card, Bluetooth, USB disk mode with "M" button.

Charge Your Devices Easily
With a 5V/2.1A USB charging port, you can charge your phone or other devices in fast speed.

Specification:
Bluetooth Version: V3.0 + EDR
Working Current: 45mA (Max)
Stand-by Current: 25mA (Max)
Effective Range: 5 meters
Frequency: 87.5MHz - 108.0MHz
Compatible Phone Models: Bluetooth enabled devices such as iPhone 8, iPhone 8 plus, iPhone X, Samsung, HTC, LG, Blackberry, Sony, Tablet and iPad

Note:
Please do not play music from two sources simultaneously, or there will be two voices. If you want to change mode to play music, pause the music of the first source, and then play the music of the other source.

Package Included:
1 x FM Transmitter
1 x 3.5mm Audio Cable
1 x User Manual

4. VicTsing (Upgraded Version) QC3.0 Bluetooth FM Transmitter for Car, Wireless Radio Adapter Hands-Free Car Kit with Power On/Off Switch and Large Display, Dual USB Ports, U Disk, TF Card MP3 Player

Feature

Intelligent QC3.0 Quick Charge Input 12-24 V; Output 2 USB ports: Quick charge for your QC3.0-enabled devices. No more annoying waiting. The other USB charging port supports 5V/1A output which can intelligently identify android or other devices. Besides, you could charge two devices simultaneously with this Bluetooth FM transmitter for car.
Power On/Off Switch & Special design One button to Power OFF : Save power and prevent it from draining your car battery. Also press"ON"to turn the item on, don't need to take FM transmitter in and out of the car socket.The Bluetooth transmitter has more Larger Horizontal screen which has perfect screen aspect ratio. Area of which up to 6.82 square centimeters, 1 square centimeter larger than the 1.77 screen. With Flexible & Adjustable Hose to adjust the display for optimal viewing comfort.
3 Music Playing &Auto Connection Enjoy best quality music via USB disk (32GB), Bluetooth connection, TF card (32GB); Support A2DP and MP3/WMA/FLAC/AAC/WAV format music. Besides, you can browse the folder while playing music. And it supports "folder loop" or "full loop".Also automatically connect to the last paired smart device when you turn on the FM transmitter bluetooth.
Crystal Hands-free calls & Broad compatibility The Bluetooth FM transmitter for car adopts advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind; Built-in microphone feature supports hands-free talking reduce interference. The FM transmitter Bluetooth is equiped with high-end Bluetooth chip, compatible with most devices on the market that Bluetooth enabled, including Motorola, Samsung, HTC, LG, Blackbery, Sony etc.
EDR Technology & Safety Protection EDR(Enhanced Data Rate), which ensures a faster data transmission rate and much more stable connection between a device and the audio receiver.This FM transmitter built-in over-current protection, over-voltage protection, short-circuit protection and intelligent temperature-control functions can not only better protect your car and your smart devices but also to effectively prevent those potential dangers.

Description

Make Your Journey Safer and Enjoyable.
The easiest way to add Bluetooth function to your car stereo system; The fastest charger to fulfill your power-hungry smart devices in vehicle.

Memory Function and ON/OFF Switch
Automatically connect to the last paired smart device when you turn on the Bluetooth FM transmitter.

High Performance
Support A2DP, to achieve the stereo music lossless transfer to your car speaker. Built-in microphone feature can set free your hands during answering the calls and help you safely drive.

Flexible & Adjustable Hose
Easily adjust the display screen to your habitual viewing angle.

Wide Compatibility
Compatible with iPhone 8,iPhone 8 plus, iPhone X, iPhone 7 iPhone 7 plus, Samsung, HTC, LG, Blackberry, Sony, Tablet and iPad etc.

Specifications:
Bluetooth vision: V4.2+EDR
Effective Range: 5 M
FM Frequency: 87.5 MHZ-108.0 MHZ
Compatible Audio Format: MP3/WMA/WAV/FLAC/AAC
U Disk/TF Card Max Capacity: 32GB

Package Included:
1 x Bluetooth FM Transmitter
1 x User Manual

5. Nulaxy Wireless in-Car Bluetooth FM Transmitter Radio Adapter Car Kit W 1.44 Inch Display Supports TF/SD Card and USB Car Charger for All Smartphones Audio Players-KM18

Feature

1. THE BEST: Consolidated for customers the best FM Transmitter on the market the Nulaxy KM18 won the market for its quality and superior technology.
2. GREAT ADVANTAGES: Compatible with most devices on the market (Apple, Samsung, Xiaomi, Oppo, Sony) you will not have problems with compatibility. Play your favorite songs in the sound of your car through Bluetooth, TF Card, Aux Cable. Advanced noise reduction system will guarantee you a quality crystal clear sound.
3. BIG LCD DISPLAY: Developed with 1.44 inches screen to better visualize your phone calls, musics, car battery voltage. Ideal sized screen to assist drivers without disturbing the experience while driving safely.
4. TECHNOLOGY IN YOUR CAR: With our device you will add in your car: 1) Bluetooth connection; 2) Answer phone calls with a click and safely while driving; 3) Voltmeter function to control the quality of your car battery; 4) 3 different ways to play music in your car and more.
5. VOLTMETER FUNCTION: Safety when driving is our first concern, so we equip our devices with voltmeter. You can now check the quality of your battery before your trip or daily ride. Battery between 14.8V to 13.4V is when your car is on and moving. Battery between 12.8V to 12.2V is the normal voltage of the battery in your car parked and power off. Battery below 12V change the battery as soon as possible.

Description

Nulaxy KM18 is the best selling FM Transmitter on the market, has been consolidated by uniting quality and high technology.

The functions that our KM18 adds to your car without any type of installation and wires is incredible. With our device you bring your classic car to a new generation without change its style or damage the originality of your car.

Add in Your Car:
1) Answer calls phones safely and with one click;
2) Listen to music from your phone, MP3 player, tablet , laptop, tf card and connected devices via aux cable in the sound of your car;
3) Control the quality of your car battery with our voltmeter function;
4) Charge your devices through the secure USB port;
5) LCD screen with ideal size to view your telephone calls, music, car battery voltage and other information with more comfort and quality.

Add all these functions with just one device is not amazing?

Bring your car to new generation in a simple and safe way!

Nulaxy, driving you safer and better.

6. Bluetooth FM Transmitter for Car, 5.0 Wireless Bluetooth FM Radio Adapter Music Player /Car Kit and 2 USB Ports Charger Support USB Drive

Feature

2 PORTS USB CAR CHARGER & QC3.0 CHARGER: Support charging two devices simultaneously, one port is Quick Charge 3.0 port compatible with: QC2.0, Hua Wei FCP, Type-C and Samsung., and the matching smart IC can automatically match the current.
Under the maximum output, the charger efficiency is more than 80%, so that your device can be fully charged in a short time. Better-charging performance! [Note: QC2.0/3.0 are not compatible with Samsung S9.]
ANSWER CALLS HANDS-FREE:High-performance microphone with Noise Suppression (CVC) technology, grants you crystal clear call. Answering/redialing/dismissing or ending call just simply click a button.
Seamlessly switches between incoming calls and music; Drive more safely . Moreover, it supports voice navigation of your phone.
IMMERSE IN HiFi MUSIC: Insert a USB flash driver which contains MP3 files into the"RIGHT"USB port and enjoy it.
If that's not enough, it can also support your playlist with full range of audible frequencies with no distortions of the original signal from your MP3, iPhone, Android Smartphones and more Bluetooth enabled devices.
WIDE COMPATIBILITY: Bluetooth Car FM Transmitter can be paired as a hands-free kit with all Bluetooth enabled devices, such as iPhone, iPad, iPod, Tablet, Samsung, HTC, Sony and other Andriod Smartphones;
Stream music and calls directly from your mobile devices to car stereo system via FM radio signal( 87.5-108.0MHz).
MULTI-SAFETY PROTECTION: Comes with built-in over-current protection, over-voltage protection, intelligent temperature control, short circuit protection. The FM transmitter effectively prevents multiple unsafe problems.
Low noise and low ripple output, which can effectively reduce the loss of electronic devices within the charging device. Better protect your car and smart devices.

Description

Top Quality QC3.0 In-Car Wireless Bluetooth professional-grade FM Transmitter

This little gadget with dual USB Ports Charger(one is QC3.0 charger), LED digital display screen and Built-In
Mic, gives you safer, Flexible and convenient driving experience of hands-free calling, music enjoyment, quick charge.

Feature:

Wirelessly transmit phone call from mobile phone to car FM stereo system.
Switch to hands-free mode automatically from music playing status when receive call.
Built-in Microphone.
Support music playing from USB.
Detect and display the voltage of car battery when power on.
Full 206 channels optional from 87.5-108.0MHz.
With Voice prompts.
Low voltage warming warning: Less than 12V (Voice prompt ).
Incoming call number announcement.
Supports last call redial.

Function:

Built with a high-performance microphone, with Echo Cancellation and Noise Reduction (CVC) technology offers you
a crystal clear calling and safer driving.
Two music play mode(pair with the phone via specific Bluetooth or Insert USB Disk into the Right USB Port) let
you be absorbed in music playing when driving.
Built in dual USB ports car charger(one QC 3.0 speedy charge port), and smart charging IC, automatically detects
your devices and charges all cellphone or iPad at optimal speed. Charge two devices simultaneously
and fully charged in a short time
Super compact and portable design with blue LED digital screen display of FM frequency and car voltage,
provides you portable driving travel.

NOTE:

Please NEVER use it in these conditions:
Moist or underwater conditions.
Near heater or high-temperature service.
With direct and strong sunshine.
Never dismantle it without due permission.

Package contents:

1x Bluetooth FM Transmitter with Dual USB Charge Port
1x User Guide

7. VicTsing Bluetooth FM Transmitter for Car, Wireless in-Car Radio Transmitter, Music Player Car Kit with Power Off, Stereo Sound, Hands-Free Calls and 2 USB Ports Support USB Flash Drive

Feature

Super easy to use & Dual USB Ports Plug-and-play usability, this FM transmitter bluetooth is super easy to install and set up. With 5V/2.4A USB charging port can get your devices like smart phones and other devices full charged in short time, and the other one with Music icon is designed for reading music files.Also you could charge two devices simultaneously with this Bluetooth FM transmitter for car.
2 Music Playing Modes with HI-FI Stereo Sound You are able to enjoy music feast in your car both via bluetooth function and U disk (MP3, WMA, WAV, FLAC format supported). The bluetooth car adapter support for Bluetooth A2DP, AVRCP, HSP and HFP profiles makes crystal sound quality within reach.
Crystal Hands-free calls & Wide compatibility The advanced CVC interference and noise cancellation technology creates full duplex sound as well as suppresses noise and wind. The bluetooth fm transmitter for car built-in high-sensitive microphone supports hands-free calling when driving. Simply press 'CH' to switch to a private call to better protect your privacy.The car radio transmitter is compatible with most devices on the market that Bluetooth enabled and 12-24V cars/trucks.
Voice Navigation and Memory Function No more worry about not finding your way! Featuring providing crystal clear voice navigation and self-adjusting volume for navigation when playing music, it will make your road trip always full of pleasure. Also it will automatically connect to the last paired smart device when you turn on the car radio transmitter .
One button Power off & Elegant LED Screen Long press "CH"button to Power Off : to Save power and prevent it from draining your car battery. Don't need to take FM transmitter in and out of the car socket.Comes without any blind spots, this screen is extremely easy to read at night and in daytime, no longer interfering with your focus on driving. The car bluetooth adapter large Knob/Call Button with a circle of blue backlight at the bottom greatly simplifies your operation for safer driving.

Description

Enjoy crystal clear music and hands-free calling on the go.

Flexible Goose Neck
With a flexible hose, the screen of bluetooth radio transmitter can be adjusted according to different using habits, ensuring it's the best viewing angle for your safe driving.

Easy to use:
1. Simply plug the product into car cigarette socket, turn your car FM radio on, find the empty radio stations(not the local radio station) , then adjust the bluetooth fm transmitter frequency to be the same frequency as that of the car radio.
2. How to adjust bluetooth car transmitter frequency: Short press the CH button and rotate the knob clockwise to increase the frequency while rotating the knob anticlockwise to decrease the frequency.

Specifications:
Connection Technology: Bluetooth
Input Voltage: DC 12 V~24 V (MAX Input 9-26 V)
USB Output Voltage: DC 5V5%
Standby Current: 50mA (when not charging for smartphone or other devices)
FM Frequency Range: 87.5-108.0MHz
Compatible Bluetooth Protocol: A2DP/AVRCP/HSP/HFP
Compatible Music Format: MP3/WMA/FLAC/AAC/WAV
Support U Disk: MAX 32 G

Package Included:
1 x Bluetooth FM Transmitter
1 x User Manual

8. Comsoon Bluetooth FM Transmitter, [Blue Ambient Ring Light] Wireless Radio Car Receiver Adapter Kit with Hands-Free Calling, Dual USB Charger 5V/2.4A & 1A, Support TF/SD Card, USB Disk

Feature

AMBIENT RING LIGHT & LED DISPLAY: When power on, the ambient luminous ring light will illuminate blue, making it easy to use in car dark environments, and also brings a cheerful atmosphere; Easy and comfortable to view volume, car voltage and FM frequency displayed on the LED screen
2 USB PORTS & SAFE CHARGING: Supports charging 2 devices simultaneously with overcharge protection. One USB port(5V/1A) with music icon can read USB disk, another USB charging port(5V/2.4A) efficiently gets your smart device fully charged. Enjoy in-car stereo streaming and charge smart phones at the same time
3 MUSIC PLAY MODES: Comsoon Bluetooth FM transmitter can stream clear stereo music freely in 3 ways--A. Bluetooth Connection; B. USB Flash Disk (32G); C. TF Card (32G), Supports MP3/WMA/FLAC/WAV/APE format
HANDS-FREE CALLS: Built-in microphone with echo cancellation and noise suppression (CVC) technology, this FM transmitter provides an amazing hands-free function; Answer/Reject/Hand up/Redial calls all in one multifunction button; Automatically switch to hands-free mode from music playing status when coming calls
EASY to SETUP: Plug this wireless car kit into the cigarette lighter socket, tune your car FM radio to a blank station(87.5-108.0MHz), and adjust this FM transmitter to the same one; Pair with your phone via Bluetooth 4.2, then there you go

Description

Comsoon Bluetooth FM transmitter for car brings you a safe and relaxing driving
The easiest way to add Bluetooth function to your car stereo system; The simplest hands-free solution to bring wireless audio to your existing car stereo and listen to your favorite songs.

Smart Voice Navigation
When connected with your phone via Bluetooth, the car FM transmitter will announce to navigate from your phone's app. Enjoy effortless driving on your journey.

Safe for Calling
Bluetooth 4.2 provides a strong, stable connection for reliable hands-free calling that you can hear clearly through your car's stereo.

Compact and Stylish Design
Environmentally-friendly ABS casing with matte process makes the car adapter perfectly match your elegant car interior. Space-saving design prevents from blocking your gearshift and ensures safer driving.

Widely Compatible
Advanced Bluetooth 4.2, fits for all Bluetooth enabled devices, like iPhone, iPad, iPod, Tablet, and Android smartphones; Stream music, car navigation or calls from your mobile devices to car stereo system via FM radio signal.

Easy Operation
1. Plug it into car cigarette lighter socket, it will power on automatically;
2. Connect your mobile devices with this FM transmitter via Bluetooth technology, or insert USB flash drive or TF card into the transmitter;
3. Tune your car radio to a blank unused FM frequency;
4. Adjust Comsoon FM transmitter to the same frequency: Rotate the MFB or press" Next/Previous Song" button to increase/decrease frequency.

Specifications:
FM Frequency: 87.5-108.0 MHz
Input Voltage: DC 12V-24V
USB Output: DC 5V/2.4A & 1A

Package Included:
1x Bluetooth FM Transmitter
1x User Manual

9. VicTsing (Upgraded Version) 1.8" Color Display Bluetooth FM Transmitter for Car, Wireless Radio Transmitter Adapter with EQ Mode, Power Off, 3 USB Ports, 4 Music Playing, Hands-Free Calls, AUX Input

Feature

1.1.8" Large TFT Color Screen. Designed for brighter and clearer display, 1.8" color screen offers you a much wider viewing for incoming phone number, song name, FM frequency, connected Bluetooth device and more. 360-degree rotatable metal hose is highly flexible to adjust for comfortable viewing.
Power ON/Off and Triple USB Ports. Plug in or press any button to power on. Unplug or long press the buttons to power off. 2 USB ports (5V/2.1A; 5V/1A) support charge 2 devices at the same time. Another USB port supports reading U disk up to 32G. Enjoy crystal clear hands-free call or music without worry about low battery of your phone.
2.4 Ways to Stream Music. You can stream music freely in 4 ways: A: U Disk(32G) B: TF Card(32G); C: Aux Input; D. Bluetooth connection. Low power consumption MTK chip ensures quicker and more stable transmission. Support A2DP/AVRCP/HSP/HFP.
3.Customize Your Music. You can select from 5 EQ modes including normal, rock, pop, jazz and classical when stream music via TF card or U disk. Suite your taste for music and enjoy your favorite music effortlessly.
5.Sports Car Design. Inspired by sports car, the FM transmitter is exquisitely designed to bring fashion and versatility to your daily driving. An efficient car companion as well as a stylish decoration to match your car interior.

Description

Description:
Dedicating to make your driving effortless and pleasant, VicTsing FM transmitter features 1.8in Larger Color Display, 5 Selectable EQ Modes and Fashionable Sports Car Design.

Larger and Clearer Color Display
Featuring 1.8"TFT color screen, VicTsing FM transmitter makes you visualize information with ease, such as phone number, song name, car voltage and etc.

Experience Clear Hands-free Calling
Adopting CVC noise reduction technology, our FM transmitter with highly sensitive microphone enables you to communicate with others easier.

Announce Phone Call
When there is an incoming call, the Bluetooth FM transmitter will announce the phone number for notice. Never miss any important phone call.

Multiple Security Protection
Built-in over-current protection, over-voltage protection, intelligent temperature control and short circuit protection, the FM transmitter effectively protects your car and device while in use.

Specifications:
Bluetooth Version: V3.0
Wireless Range: 5m
FM Frequency: 87.5-108.0 MHz
Compatible Audio Format: MP3/WMA/WAV/ACC
Bluetooth Protocol: A2DP/AVRCP/HSP/HFP

Package Contents:

FM Transmitter 1
Audio Cable 1
User Manual 1

10. (Upgraded Version) Bluetooth FM Transmitter, Sumind Wireless Radio Adapter Hands-Free Car Kit with 1.7 Inch Display, QC3.0 and Smart 2.4A Dual USB Ports, AUX Input/Output, TF Card Mp3 Player

Feature

Intelligent and fast charging: input 12-24 V; Output 2 USB ports: smart 2.4 A charge port which can intelligently identify android or iPhone devices and QC3.0 fast charge port
Special design: large key for easy operation; 1.7 Inch large LCD backlight display song name/ incoming phone number and shows your car's battery level when car start; Can rotate the LCD display screen in 270-degree gooseneck for optimal viewing comfort; Turn off the FM transmitter: long pressing the next song key for 5 seconds, it will turn off the FM and functions keep charging function
Broad compatibility: this radio adapter works with compatible devices, like iPhone, iPad, iPod, tablet, smartphones or MP3 player, you can transfer music in those devices to car audio via 3.5 mm audio cable; Support TF/ Micro SD card in FAT format up to 32G; Support A2DP; Support MP3/ WMA format; Also support AUX output and input
High clear sound and call quality: adopted advanced interference and noise cancellation technology - CVC technology creates full duplex sound and suppresses noise and wind; Built-in microphone feature supports hands-free talking reduce interference
Features v4.2 and EDR: compared to earlier or older versions likeV2.0, V 2.1, or V3.0, V4.2 consumes much less energy and lasts much longer; EDR(Enhanced Data Rate), which ensures a faster data transmission rate and much more stable connection between a device and the audio receiver

Description

Features
Works well with most Bluetooth enabled devices, such as iPhone, iPad, iPod, tablet and smart phones etc.
The radio adapter with wide compatibility can support TF/ Micro SD card in FAT format up to 32G, A2DP, MP3/ WMA format and also AUX output/input.
The device features Bluetooth V4.2 which can save energy and last for much longer and EDR to ensure faster data transmission rate and more stable connection between a Bluetooth device and the audio receiver.

Specifications:
Bluetooth:
Bluetooth vision: V4.2+EDR
Bluetooth frequency: 2.4 GHZ
Sensitivity: -42 db+/3 db 360
Effective range: 5M
RF output: 4 dbm
FM frequency:
FM: 87.5MHZ-108.0MHZ
Effective range: 2 M

Package includes:
1 x In-car Bluetooth FM transmitter
1 x 3.5mm Audio cable
1 x 3A fuse
1 x User manual

Conclusion

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