When you want to find tens stimulator unit, you may need to consider between many choices. Finding the best tens stimulator unit is not an easy task. In this post, we create a very short list about top 10 the best tens stimulator unit for you. You can check detail product features, product specifications and also our voting for each product. Let's start with following top 10 tens stimulator unit:
When you want to find tens stimulator unit, you may need to consider between many choices. Finding the best tens stimulator unit is not an easy task. In this post, we create a very short list about top 10 the best tens stimulator unit for you. You can check detail product features, product specifications and also our voting for each product. Let’s start with following top 10 tens stimulator unit:
Best tens stimulator unit
1. TENS 7000 2nd Edition Digital TENS Unit with Accessories
Feature
Channels: Dual channel for use with two or four electrodesTimer: Variable 5 - 60 minutes or continuous
Auto shutoff
Powerful 100 mA output with adjustable 2 - 150Hz Pulse Rate
Color of electrodes may vary
One year warranty
Description
The TENS 7000 2nd Edition is the best valued digital TENS unit on the market today. Proven to be the most durable and easy-to-use TENS unit. The upgraded digital processor is accurate and precise. The preferred doctor's choice for effective pain relief is now available over-the-counter (OTC).
There is nothing "magic" about Transcutaneous Electrical Nerve Stimulation (TENS). TENS is intended to be used to relieve pain. The TENS unit sends comfortable impulses through the skin that stimulate the nerve (or nerves) in the treatment area. In many cases, this stimulation will greatly reduce or eliminate the pain sensation you feel. Pain relief varies by individual, mode selected for therapy, and the type of pain you are experiencing. In many people, the reduction or elimination of pain lasts longer than the actual period of stimulation (sometimes as much as three to four limes longer).
The TENS 7000 comes complete with the device, two (2) pair of lead wires, one (1) four (4) pack of reusable electrodes, one (1) 9-volt battery, a quick start guide, instruction manual and hard carry case. Five (5) powerful modes of operation to tackle the toughest common household or exercise related pain: Burst, Normal, Modulation, Strength Duration 1 (SD1) and Strength Duration 2 (SD2).
the color of electrodes may vary
2. iReliev TENS + EMS Combination Unit Muscle Stimulator for Pain Relief & Arthritis & Muscle Strength - Treats Tired and Sore Muscles in Your Shoulders, Back, Ab's, Legs, Knee's and More
Feature
2 in 1: iReliev TENS + EMS Combination Unit Combines Two Therapies in 1 device.WHAT IS TENS?: Stands for "Transcutaneous Electrical Nerve Stimulation"- a safe, non-invasive, drug free method of pain relief used by Physical Therapists and prescribed Doctors for over 30 years. The iReliev Bundle delivers low-voltage pulses to the skin to stimulate nerve fibers effectively blocking the pain signal to your brain. Also increases natural endorphins--a natural pain reliever. You can say GOODBYE to those pain pills that have been dulling your life!
14 Therapy Modes: 7 TENS Pain Relief Modes, 1 Arthritis TENS Mode & 6 EMS Muscle Strength & Recovery Modes
WHAT IS EMS? : Electrical Muscle Stimulation (EMS) also known as nueromuscular electrical stimulation (NMES) is the elicitation of muscle contraction using electrical impulses. EMS has the potential to serve as a strength training and rehab tool as well as offer post-exercise recovery benefits for athletes.
Features: 25 levels of 80 mA intensity, 5-60 minute adjustable timer, lock function, dual channel versatility, portable design!
Description
iReliev TENS + EMS combines two therapies in 1 device the footprint of a credit card. TENS blocks Pain, EMS strengthens and helps muscle recover and heal quicker.
Use What the Pro's Use. Get the Competitive Edge with On Demand Pain Relief, Muscle Strength & Performance. Great for Arthritis!
Athletes & Performers have long benefited from two clinically supported therapies to help relieve pain (TENS) & improve muscle performance, strength & recovery (EMS). You can too, now with the iReliev Strength & Recovery Dual Channel EMS + TENS Combination Unit.
This highly innovative device offers 14 pre-set therapy modes making this system extremely easy to use & versatile. The integrated TENS modes (P1-P8) generate a safe & effective output sensation that helps block pain or increase endorphins, a natural pain reliever. The EMS programs (P1-P6) deliver rhythmic massage-like impulses that help increase blood flow to promote muscle recovery, strength & performance. PHYSICAL THERAPIST ENDORSED:
I, Joe Noel, PT, licensed Physical Therapist in the State of Florida and having practiced as a PT for the last 24 years do hereby recommend the iReliev TENS + EMS unit for treating pain & increasing muscle strength. I have used TENS & EMS in my clinical practice & recommend for home use. I believe iReliev is uniquely designed to offer RX strength pain relief & muscle conditioning.
THE RETURN POLICY:
You are getting one the best iReliev. We are so confident that you will benefit from iReliev, if you are not fully satisfied, please return within 14 business days from the date you received and we will refund your money minus shipping and handling.
Thanks for trusting us with your pain Relief & muscle recovery.
Restore, Recover, Renew...iReliev
3. AUVON Dual Channel TENS Unit Muscle Stimulator (Family Pack), 20 Modes Rechargeable TENS Machine with Huge Pack of 24 Pcs Reusable TENS Unit Electrode Pads (2"x2" 16pcs, 2"x4" 8pcs)
Feature
PAIN RELIEF MACHINE. The rechargeable electric muscle massager can stimulate the sensory nerves and muscles, activate specific natural pain gate mechanism, relax your body and have pain management anytime you feel the need.UP TO 20 MODES. Pre-set modes offer you hammering, kneading, shiatsu and more choices to help relieve pain associated with aching and fatigue muscles in the shoulder, low back, knee from exercise, normal household or work activities.
INDEPENDENT MODE CONTROL. You can set separate modes and intensities for channel A and channel B. For example, you could choose Acupuncture mode in channel A with an intensity level of 5 for your shoulder. While in channel B, the Tapping mode is being run with the intensity set to level 12 on your lower back as a back electric stimulator.
24Pcs INDUSTRY-LEADING TENS PADS. The included electrode pads can provide excellent self-stick performance for up to 20 to 30 uses. The shaped 2" TENS electrodes are recommended for more compact pain areas like the knees or elbows. Meanwhile, the bigger 2"x4" reusable patches are perfect for larger areas such as the back for TENS pain relief.
What You Receive: 1 x Dual Channel TENS Machine, 16 x 2" Square Electrode Pads, 8 x Large Rectangle 2"x4" Pads, 2 x Lead Wires, 1 x USB cable, 1 x USB Charger,1 x User Manual, 1 x Pad Holder, 1 x Pouch, our 12-month warranty and friendly customer service. (4pcs 2x2 pads are in a pack while 2pcs 2x4 pads are in a pack. Please open the sealed bag firstly and unfold each pads pack before counting the pads quantity.)
Description
AUVONLive Smart, Live Healthy
AUVON TENS Unit
The TENS machine is safe, non-invasive, drug free method of pain relief and pain management. Many people have even used it for intense pain from sports injury, knee injury, foot, hip, arthritis or tennis elbow.
Do I need independent intensity controls for each channel?
Most of dual channel TENS units (muscle stimulator for pain) on the market today have independent intensity controls for each channel. What this means is that you can increase and decrease the "massage" strength / intensity separately within the channels. The major advantage with a dual channel device is that you can "massage" two areas (or sides of the body) simultaneously. With a single channel unit you are limited to one area for a comfortable feeling.
What are fully isolated channels?
Fully isolated channels enable you to run separate programs in different channels, rather than just control the intensity for the channel. This is a quite a recent development and can be found on this AUVON dual channel TENS machine. For example, you could choose Acupuncture mode in channel 1 with an intensity level of 5 for your shoulder. While in channel 2, the Tapping mode is being run with the intensity set to level 10 on your back. In this condition, you will never worry about the strength is too weak on your back while too high on you shoulder where you feel more sensitive.
4. MEDVIVE Rechargeable Tens Unit Muscle Stimulator, 2nd Gen 16 Modes & 8 Upgraded Pads for Natural Pain Relief & Management, FDA Cleared Electric Pulse Impulse Mini Massager Machine
Feature
EASY TO USE: - LARGE ANIMATED LCD SCREEN WITH BACKLIGHT - The animated icons on the LCD screen is easy to understand. The backlight makes it easy to read at night or in the dark. - INSTRUCTIONS MANUAL - Clear product instructions, making the device quick and easy to set up.PAIN RELIEVER: Clinically-proven, natural and effective device for easing pain without requiring the user to take medicine for problem areas such as the back, joints, neck, knees, shoulders, ankles, legs, wrists, and elbows. Ships with 6 reusable pads for precision placement. Align electrodes exactly how you want. - TWO OUTPUTS - Simultaneous dual output designed for two individuals or two different areas on your body. Whether you use 1 or 2 outputs, all pads will deliver the same intensity.
FEATURES: - 16 PRE-PROGRAMMED MODES/INTENSITY ADJUSTMENT - Versatile unit delivers 16 different massage modes and 20 strength levels. The modes range from Shiatsu/Deep Tissue to Low Intensity with Kneading/Knocking, Cupping, Acupuncture, and Tapping as other options. - ADJUSTABLE TIMER - Timer allows for usage between 10 and 60 minutes. The time remaining is automatically counted down. - AUTO SHUT-OFF - Device automatically turns off after time finishes and session is completed.
PORTABLE: - CARRY BAG - The device comes with a carrying bag, allowing you to carry it on the go and use when necessary. - POCKET SIZE - This unit is lightweight, small, and durable, and packs enough power to thoroughly massage your body, making it convenient to relax anywhere at any time. - RECHARGEABLE LITHIUM BATTERY - Giving you up to 6 hours of battery life. USB CHARGER - Can be charged at home or on the go. - BATTERY INDICATOR - Marks when battery needs to be recharged.
FULLY CERTIFIED: This device is fully compliant with FDA standards.
Description
Electronic Tens Pulse Stimulator Portable Massager with 16 Modes and 8 Pads for Natural Pain Relief and ManagementPRODUCT HIGHLIGHTS
Customization:With 16 pre-programmed modes, 20 strength levels, and 2 outputs, this device is versatile and can accommodate every sensitivity level and style of massage desired for pain relief, from deep tissue to low intensity.Natural:The MEDVIVE MV950 Tens Unit provides a natural method of activating endorphins and stimulating the muscle to give you a natural pain regulator. You don't have to worry about the possible side-effects that come with using drugs for pain relief.
Ease of Use:Not only does the large animated LCD screen with backlight make it easy to read and understand even in the dark, but this tens unit comes with a clear user's manual, making the device quick and easy to set up. Relief comes at a simple touch of a few buttons.
Portable:The compact device with the stylish carry bag can fit in your pocket, purse, or suitcase, making it easy to travel with and to use anywhere at any time.Timer:The 10 to 60-minute adjustable timer and auto shut-off, allows for a relaxing experience without you having to keep the time.Rechargeable:The rechargeable battery gives you up to 6 hours of pain relief and promotes relaxation at home or on the go. The battery indicator ensures you are aware of when the device needs to be charged to make sure of this.
PACKAGE CONTENT
Device (2) Large Pads (4) Medium Pads (2) Small Pads (2) Electric Wires USB Cable & AC Adapter Instructions Manual Collections Board for Pad and Wire Carry Bag
5. AUVON Dual Channel TENS Unit Muscle Stimulator Machine with 20 Modes, 2" and 2"x4" TENS Unit Electrode Pads
Feature
PAIN RELIEF MACHINE. The rechargeable electric muscle massager can stimulate the sensory nerves and muscles, activate specific natural pain gate mechanism, relax your body and have pain management anytime you feel the need.UP TO 20 MODES. Pre-set modes offer you hammering, kneading, shiatsu and more choices to help relieve pain associated with aching and fatigue muscles in the shoulder, low back, knee from exercise, normal household or work activities.
INDEPENDENT MODE CONTROL. You can set separate modes and intensities for channel A and channel B. For example, you could choose Acupuncture mode in channel A with an intensity level of 5 for your shoulder. While in channel B, the Tapping mode is being run with the intensity set to level 12 on your lower back as a back electric stimulator.
INDUSTRY-LEADING TENS PADS. The included electrode pads can provide excellent self-stick performance for up to 20 to 30 uses. The shaped 2" TENS electrodes are recommended for more compact pain areas like the knees or elbows. Meanwhile, the bigger 2"x4" reusable patches are perfect for larger areas such as the back for TENS pain relief.
What You Receive: 1 x Dual Channel TENS Machine, 4 x 2" Square Electrode Pads, 4 x Large Rectangle 2"x4" Pads, 2 x Lead Wires, 1 x USB cable, 1 x USB Charger,1 x User Manual, 1 x Pad Holder, 1 x Pouch, our 12-month warranty and friendly customer service.
Description
AUVONLive Smart, Live Healthy
AUVON TENS Unit
The TENS machine is safe, non-invasive, drug free method of pain relief and pain management. Many people have even used it for intense pain from sports injury, knee injury, foot, hip, arthritis or tennis elbow.
Do I need independent intensity controls for each channel?
Most of dual channel TENS units (muscle stimulator for pain) on the market today have independent intensity controls for each channel. What this means is that you can increase and decrease the "massage" strength / intensity separately within the channels. The major advantage with a dual channel device is that you can "massage" two areas (or sides of the body) simultaneously. With a single channel unit you are limited to one area for a comfortable feeling.
What are fully isolated channels?
Fully isolated channels enable you to run separate programs in different channels, rather than just control the intensity for the channel. This is a quite a recent development and can be found on this AUVON dual channel TENS machine. For example, you could choose Acupuncture mode in channel 1 with an intensity level of 5 for your shoulder. While in channel 2, the Tapping mode is being run with the intensity set to level 10 on your back. In this condition, you will never worry about the strength is too weak on your back while too high on you shoulder where you feel more sensitive.
6. Easy@Home Professional Grade TENS Unit Electronic Pulse Massager EHE012PRO - Backlit LCD Display, Professional Grade Powerful Pulse Intensity and Rechargeable Battery - FDA Approved for OTC Use
Feature
Are you looking for a professional grade premium pain relief and muscle recovery TENS Unit? Here is Easy@Home EHE012PRO, the professional natural and highly effective pain relief device with muscle stimulation effect. The premium design with professional grade powerful pulse intensity makes it suitable not only for pain relief and muscle relaxation but also for muscle recovery and pain management for amateur and professional athletes or regular exercisers.PROFESSIONAL GRADE: 20 Power Levels for Intensity from very mild to extremely powerful, 5 Automated Massage Program Options and 3 Traditional Massage Modes. FDA approved for OTC use effective pain relief therapy device.
RECHARGEABLE BATTERY: Rechargeable lithium-ion battery through USB or DC. Up to 120 minutes per session multiple times a day. 4 electrode pads and elegant leather storage bag included.
USER FRIENDLY: User friendly, portable and compact design with a large backlit LCD screen with fully automated intuitive massage programs and adjustable Intensity. Digital controls for left and right channels independently to have different intensity and mode.
SAFETY AND WARRANTY: **We are so confident that you will love this product that we offer a 1 Year Hassle Free Money back or PRODUCT REPLACEMENT Guarantee!!! **. ( *** DO NOT use the product if you have a cardiac pacemaker or an existing cardiac condition, implanted metal devices/screws areas of the body or suffer from epilepsy. Please read the complete safety warnings before purchase. ***)
Description
OverviewEHE012PRO Electronic Pulse Massager TENS (Transcutaneous Electrical Nerve Stimulation) Unit is the professional grade premium model of the Easy@Home TENS Unit product line. This device delivers electric impulses to nerves, muscles and cells on different part of our body. The impulses used in proper strength and frequencies make continuous and gentle stimulation to trigger the body producing natural response to block, relieve pain and to stimulate the regeneration of tissues.
Professional Grade
It has two independent output channels and each channel provides a power level of 1-20, from very mild to extremely powerful while most other TENS only has power level 1-10. This powerful, yet very safe unit is not only suitable for any chronic or occasional pain relief, but is also good for muscle recovery and relaxation after physical exercise by regular exercisers, amateur and professional athletes.
User Friendly Design
You can tell at a glance the remaining treatment time, the chosen auto program (Massage, Beat, Knead) and Intensity level on backlit LCD screen. You can simply make your choice by pushing the buttons. 5 Automated Massage Program Options and 3 Traditional Massage Modes.
Rechargeable Battery
In addition, it's rechargeable through DC or USB connection. The rechargeable lithium battery provides this professional unit the long-lasting power, while saving you the cost of replacement batteries. Up to 120 minutes per session multiple times a day.
Others
What's more, you can carry everything you need for pain relief together while travelling with the handy carry storage bag. This portable and convenient unit is FDA approved for OTC (over the counter) use without a prescription. Note: Electrode pads included do not contain any latex.
7. iSTIM EV-805 TENS EMS 4 Channel Rechargeable Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Management- 24 Programs/Backlit (Including Electrodes Pads)
Feature
Including: TENS unit, 24 pcs electrodes,4 lead wires,1 instruction manuals, 2 quick guides, 1 USB charger, 1 caseLarge Clear Display - The extra-large liquid crystal display makes the Premier Stimulator so easy to understand and operate and weight just 276grms including batteries.
24 clinically approved programmes 12 TENS Programs and 12 Muscle Stimulation Programmes.
Easy and simple to operate - Just switch on and choose from one of the built in programmes and that's it, comes with simple a step by step guide.
510K approved for OTC use and safety regulations (IEC60601-1,IEC60601-1-2 EMC) certified. Made in Taiwan
Description
iStim ev-805 is your ultimate solution for pain relief. It features 4 Channels, 5 TENS modes, 3 EMS modes, 24 preset programs and Rechargeable. Just follow the manual and quick guide, then every user can be clear about this machine and incorporate it into your daily life without any problemiStim ev-805 is the highiest level model of iStim Series, and it's the high-end one for the experienced user and the 4 channels can let the user use 8 pieces electrode at one time. iStim ev-805 has lots of modes and functions, but it's be designed easy-to-use, so even the new user can use it without any problem.
iStim ev-805 includes iStim ev-805 x1, Electrodes Pads x24 (Including 3 types: 2"x2", 2"x2"(black), 2"x4"), lead wires x4, instruction manual x1, Quick guide x2, Sealable Bag x2, USB charger and lead x1 and carrying case x1
The 5 TENS modes include Burst, Normal, Modulation, SD1 and SD2. The 3 EMS modes include Contant, Synchronous and AlternateAnd the special mode includes (P1~P24)(P1~12 - TENS, P13~P24 - EMS), please refer to the quick guide to use the proper program on the proper postion. Besides, large liquid display(Backlit) showing the mode name and all settings is ideal for users to check the setting at any time
Pulse Amplitude: Adjustable, 0-100 mA peak into 500 ohm load
Wave Form: Asymmetrical Bi-Phasic Square Pulse
Pulse Rate: Adjustable, from 2 to 150 Hz, 1Hz/step
Pulse Width: Adjustable, from 50 to 300 microseconds(S), 10S/step
Timer: Adjustable, from 5 to 60 minutes or Continuous.
Battery: Lithium Battery(Rechargeable)
#DO NOT USE extra Electrode Gel with electrode pads
8. Easy@Home Rechargeable TENS Unit + EMS Muscle Stimulator, Dual Independent Channels With 20 Intensity Levels, 8 EMS or TENS Massage Types + 16-Mode, Handheld Electronic Pulse Massager, EHE029G-B
Feature
WHAT is TENS? - Our TENS ( "Transcutaneous Electrical Nerve Stimulation") Unit is a clinically-proven, natural & effective device for pain relief without requiring the user to take medicine on problem areas such as the back, joint, neck, legs and more. It is a pain relief therapy device approved by FDA for home use. Powered by rechargeable batteries with included wall charger.WHAT is EMS? Our EMS (Electrical Muscle Stimulation) device sends electronic pulses to muscles to help with muscle toning and firmness, endurance improvement, and less recovery time between workouts. This FDA-approved EMS device can also increase local blood circulation in the healthy muscles of lower extremities for those who travel, are sedentary for long periods of time, or need to enhance their blood circulation due to health condition.
EASY to USE: Large Backlit LCD screen shows your intensity, cycle countdown, and treatment selection, including 8 massage types and 16 TENS or EMS Auto modes. Choose up to 20 intensity levels for each output independently. Dual channels controlling 2 pads separately allow simultaneous 4 Electrode Pads application use. (4 pcs High Quality Electrode Pads are included; Replacement pads sold separately). It's fully automatic - just choose one of 16 modes and preferred intensity, and go!
HANDHELD and Portable: Compact in size, but packs enough power to thoroughly massage your body. Portable and can travel with you anywhere you'd like. Take it to the gym, on a trip or even to the office - it fits in your pocket or purse!
WHO Benefits from this TENS + EMS 2 in 1 Unit? 1. For those suffering from muscle, chronic, nerve, and even some acute pain, it is a drug-free alternative to relieve pain & tension. 2. For those who want muscle toning & firmness, the EMS modes on this device stimulate muscles and improve muscle performance. 3. For those who travel, are sedentary for long periods of time, or need to enhance their blood circulation, it helps with local blood circulation in the muscles of lower extremities
Description
Product Overview:
Easy@Home EHE029G-B Pulse Massager UNIT is a newly launched compact, drug-free, and easy to use TENS and EMS 2 in 1 device, which delivers electric impulses to nerves, muscles and cells to different parts across the body. By choosing a different massage type and mode, the impulses make continuous and gentle stimulation for pain relief, or for muscle stimulation or for local blood circulation purpose with proper strength and frequency.
Customizable:
Accommodates every sensitivity level with a vast scope of settings. With 8 massage types, 16 different modes, 20 strength levels, 2 independent channels and a 10-60 minute adjustable timer, you will find the perfect pulse in no time.
Simple:
Sometimes, less is more. The compact control of the EHE029G-B is designed to give you more relief with the push of a few buttons using one finger. Selections and program progress are all on a backlit large LCD screen.
All-Natural:
TENS therapy activates the body's natural pain regulators, the endorphins. By stimulating greater production and release of endorphins, pain will be relieved without all those possible side-effects that come with pain relief drugs.
Additional Features:
A bright, backlit display allows the TENS to be used effectively throughout the day, even in the dark
Rechargeable batteries promote longer lasting relief
Accessories: This monitor comes with a USB cable, wall adapter, and 4 high quality electrode pads
Excellence Guarantee:
100% customer satisfaction guaranteed: Lifetime support available by experienced and professional customer service. We offer a 1 year hassle free replacement guarantee if not satisfied. Note: Electrode pads included do not contain any latex.
9. OMRON Max Power Relief TENS Unit Muscle Stimulator, Simulated Massage Therapy for Lower Back, Arm, Shoulder, Leg, Foot, and Arthritis Pain, Drug-Free Pain Relief (PM500)
Feature
Transcutaneous Electrical Nerve Stimulator (tens) Technology Relieves Multiple Body PainsMost Powerful Tens Unit To Date
Highly Customizable
2X The POWER With 1-15 Levels Of Intensity, It's Simple To Find The Right Pain Relief
9 Pre-Set Modes Offers More Tailored Pain Therapy With 6 Pain Modes (Shoulder, Lower Back, Arm, Foot, Legs, Joint) And 3 Massage Modes (Rub, Tap, Knead)
Simple, Large Controls And A Big Screen For Easy Operation
Portable And Easy To Carry Along On Car Trips Or Plane Rides-When You Might Need It Most
Works to trigger endorphin production and enhance circulation
Description
2X MORE POWER! Our most powerful, most versatile TENS unit is still easy to personalize and customize. When you have those hard to reach, deep pains that just keep coming back, choose the Max Power Relief. It is perfect for multiple adult family members where one may have a pain in the lower back and another may have recurring knee and shoulder pain. This highly customizable TENS unit has modes to reach most of your pains. Take it to work, use at home or while travelling.10. TENS Unit EMS Muscle Stimulator - Upgraded EUNON Rechargeable Touchscreen Electronic Pulse Massager Machine Electric Quell Pain Relief Device with 9 Electrodes Pads
Feature
2-in-1 TENS and EMS Massager < < FDA cleared TENS and EMS combined physical therapy equipment, provides a safe, non-invasive and drug-free method to achieve pain relief.Used to Any Bodypart Feels Pain < < Designed with independent dual channels that control eight (8) reusable TENS unit pads (electrodes) at most for targeted pain relief. Supporting used by Two people simultaneously on different body parts, such as back, neck, knee, shoulders, etc.
Upgraded Touchscreen Easy to Operate < < Digital animated touch screen allows perspicuous and easy control of 24 different massage modes and 20 adjustable intensity level for optimal body massaging.
Fully Safety Guaranteed < < Large eye-caring LCD screen and vividly animated design offer pleasing visual effect at day or night; Smart screen lock avoids misoperating while using; Pause and Timer Buttons are especially convenient when falling asleep.
Fast 30-mins USB Recharging < < Eunon TENS machine supports 12 hours continuous use with only 30-mins full charge; Auto-off after preset time reached. Portable USB charging design is convenient for home or travel use. Purchase Promise: Full Refund or Free Replacement for any quality problem. Just contact Eunon via your order ID to get a warranty.