Top 10 Best Tens Back Pain Relief
of November 2024
1
Best Choice
MEDVICE
MEDVICE
MEDVICE 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
10
Exceptional
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2
Best Value
Neocarbon
Neocarbon
TENS Unit Muscle Stimulator, Electronic PMS Pulse Massager Machine for Shock Physical Therapy, Back Pain Relief, Sciatica and Shoulder Recovery, Gray
9.9
Exceptional
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3
Neocarbon
Neocarbon
TENS Unit Muscle Stimulator, EMS Massager Machine for Shoulder, Neck, Sciatica and Back Pain Relief, Electronic Pulse Massage Physical Therapy, Black
9.8
Exceptional
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4
Neocarbon
Neocarbon
Wireless TENS Unit for Pain Relief, Portable and Rechargeable, 15 Modes Electronic Muscle Stimulator Recovery, PMS Menstrual Pain Relief with Remote Control
9.7
Exceptional
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5
TENS 7000
TENS 7000
TENS 7000 Digital TENS Unit with Accessories - TENS Unit Muscle Stimulator for Back Pain, General Pain Relief, Neck Pain, Muscle Pain
9.6
Exceptional
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6
Hollywog
Hollywog
Hollywog TENS Unit for Back Pain, WiTouch Pro Wireless & Wearable Electronic Pulse Muscle Stimulator for Pain Relief, Adhesive Stick Pads Included
9.5
Excellent
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7
Omron
Omron
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)
9.4
Excellent
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8
Neocarbon
Neocarbon
TENS Unit Muscle Stimulator Pro for Back Pain Relief, Shoulder Recovery and Physical Therapy, Electronic EMS Massager Machine with PMS Pulse for Effective Shock Therapy, Red
9.3
Excellent
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9
NURSAL
NURSAL
NURSAL 24 Modes TENS Unit Muscle Stimulator with Continuous Stimulation, Rechargeable Electronic Pulse Massager with 8 Pads for Back and Shoulder Pain Relief and Muscle Strength
9.2
Excellent
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10
Easy@Home
Easy@Home
Easy@Home Rechargeable Compact Wireless TENS Unit - 510K Cleared, FSA Eligible Electric EMS Muscle Stimulator Pain Relief Therapy, Portable Pain Management Device EHE015
9.1
Excellent
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11
MASTOGO
MASTOGO
MASTOGO Wireless TENS & EMS Unit Back Pain Relief Massager - APP Controlled Bluetooth EMS Muscle Stimulator Machine for Back Shoulder Leg Neck Pain Relief
9.0
Excellent
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12
AUVON
AUVON
AUVON Dual Channel TENS EMS Unit 24 Modes Muscle Stimulator for Pain Relief, Rechargeable TENS Machine Massager with 12 Pads, ABS Pads Holder, USB Charger and Dust-Proof Storage Bag
8.9
Very Good
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13
AUVON
AUVON
AUVON 4 Outputs TENS Unit EMS Muscle Stimulator Machine for Pain Relief Therapy with 24 Modes Electric Pulse Massager, 2" and 2"x4" Electrodes Pads (Black)
8.8
Very Good
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14
NURSAL
NURSAL
NURSAL TENS Unit Muscle Stimulator Machine for Pain Relief Therapy, Electric Stim Massager for Back, Neck, Muscle Pain Relief Product (FSA or HSA Eligible)
8.7
Very Good
View on Amazon
About Tens Back Pain Relief
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MEDVICE 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
PROFESSIONAL PAIN RELIEVER TENS UNIT - Clinically-proven, natural and effective tens 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. Enjoy relaxing massages with a FDA cleared tens machine.. UPGRADED TENS UNIT PADS - The Low impedance Solid Gel has been upgraded to the industry leading Japanese adhesive, which can provide much better self-stick performance and easy clean up and longer lifespan. Standard snap connector lead wires electrodes are classic and commonly used in medical area, which makes it easier for you to find compatible accessories.. 16 PRE-PROGRAMMED MODESINTENSITY ADJUSTMENT Our versatile muscle stimulator tens unit delivers 16 different massage modes and 20 strength levels. The ems unit modes range from ShiatsuDeep Tissue to Low Intensity with KneadingKnocking, Cupping, Acupuncture, and Tapping as other options.. RECHARGEABLE LITHIUM BATTERY - No worries about treatment interruption for dead AA batteries any more It can give you continuous use up to 10 hours The power indicator would keep you aware of the remaining battery life Turn on the unit firstly, then recharge it with the included wall charger fully-recharged in 1 hour. This tens machine device is fully compliant with FDA standards.. ENJOY ON THE GO WITH THE PORTABLE DESIGN - This mini tens unit muscle stimulator device comes with a carrying bag, allowing you to carry it on the go and use when necessary. It is lightweight, small, and durable, small enough to fit in your pocket. It comes with TENS Unit, 2 Large Pads, 4 Medium Pads, 2 small pads, 2 Lead Wires, Pads Holder, USB Cable Adapter, Pouch, User Manual, 12-month warranty, and friendly customer service..
TENS Unit Muscle Stimulator, Electronic PMS Pulse Massager Machine for Shock Physical Therapy, Back Pain Relief, Sciatica and Shoulder Recovery, Gray
TRUE INDEPENDENT TENS UNIT Choose between 24 modes and 20 intensity levels on each channel individually, for a wider range of muscle stimulation, pain relief, and body recovery.. USB-C PORT FOR FAST 40 MIN FULL CHARGE PMS muscle stimulator, up to 20 hours of continuous use per charge. Easy to read LCD backlit screen with enlarged icons for a better operating experience. USB-C charging cable included.. DRUG FREE PAIN RELIEF Safe TENS therapy delivers back sciatica nerve pain relief among other common ailments like neck pain, carpal tunnel, arthritis, shoulder, knee, elbow, leg and foot pain.. MUSCLE RECOVERY DEVICE Portable, fast and easy body muscle relaxation by electrical pulses to any desired area. Home TENS unit personal pain relief without medication or expensive visits to your physician.. COMPLETE KIT Includes the TENS PMS Unit, charging cable, 12 matching Electrode pads in large, medium and small size 2 pairs each size, 1 pad holder and a portable case for travel protection..
TENS Unit Muscle Stimulator, EMS Massager Machine for Shoulder, Neck, Sciatica and Back Pain Relief, Electronic Pulse Massage Physical Therapy, Black
ALL IN ONE KIT Includes TENS EMS massager electronic device, 16 reusable electrode replacement pads in Small, Medium and Large sizes, 2 dual plug snap cables, USB charging cable, 2 pad holders, instruction manual and a premium travel carry case.. TENS Muscle Massager with multiple functions for back pain relief and muscle stimulation. It can be used for all muscle soreness and trouble areas like neck, back, abs, shoulder, knee, arms, legs, butt, sciatica and pelvic zone.. SCIATICA PAIN RELIEF AT HOME Back massager electronic device for body pains like lower back, sciatica or sore muscles. Small portable device with easy to use functions will help to reduce pain and muscle spams caused by arthritis or sports injuries.. EMS MUSCLE STIMULATOR 2 independent channels with 24 modes, 20 intensity levels and time control for top relaxation and pain management. You can use 4 electrode pads at the same time. Most effective way to muscle recovery and back pain relief.. NERVE MUSCLE PAIN RELIEF You can use TENS machine throughout the day, just connect the cables and put the pads for an effective muscle stimulation. Internal 180 mAh rechargeable battery a single 2-hour charge will give you 1 month of daily use..
Wireless TENS Unit for Pain Relief, Portable and Rechargeable, 15 Modes Electronic Muscle Stimulator Recovery, PMS Menstrual Pain Relief with Remote Control
3-in-1 Pain Relief Solution Neocarbon Wireless device combines TENS, EMS NMES technologies for non-invasive, drug-free pain relief treatment at home or on-the-go. Remote control included.. Quick Easy Setup Easy to use remote control without any cables. Simply place the pads on the desired area, select the massage mode and strength level for effective relief. Shoulder, knee, lower back, lumbar and cramps pain relief.. Powerful Portable Neocarbon wireless TENS unit is rechargeable and offers up to 1 hour of pain relief treatment sessions. Lightweight and discreet design allows you to move freely and easily conceal it under your clothes.. Customizable Massage Therapy With 15 massage therapy presets and 16 intensity levels, you can choose from muscle kneading, cupping, acupuncture, shiatsu and many more massage modes to meet your different needs.. Safe Durable Neocarbon wireless TENS machines are safe to use, effectively relieving chronic pain in various parts of your body. We offer a product quality lifetime guarantee for your peace of mind.
TENS 7000 Digital TENS Unit with Accessories - TENS Unit Muscle Stimulator for Back Pain, General Pain Relief, Neck Pain, Muscle Pain
NEED PRESCRIPTION STRENGTH PAIN RELIEF A TENS unit muscle stimulator and electric massager that provides pain relief, acts as a muscle massager or shoulder massager, provides carpal tunnel relief, and acts as a muscle relaxergreat for muscle recovery. OVER 1M TENS 7000 DEVICES SOLD A consumer over the counter favorite back pain relief device and a leader in physical therapy equipment for providing immediate and lasting drug-free muscle pain relief from back pain, neck pain, tennis elbow, and bursitis. A LEADER SINCE 2008 A 10 year favorite TENS device among medical professionals for delivering drug-free back pain relief as well as treating common ailments like neck pain, carpal tunnel relief, arthritis, shoulder, knee, elbow, leg and foot pain. GET IMMEDIATE PAIN RELIEF TENS machine comes with multiple TENS therapy modes that will provide instant muscle pain relief. An electrotherapy machine with everything needed for TENS therapy, a class leader in electric massagers for muscles. The pulse amplitude, or intensity level, is adjustable from 0-100mA in 10mA increments, which is controlled by the respective knobs located at the top of the device, for both channels. DUAL CHANNEL TENS UNIT The TENS 7000 TENS unit provides TENS therapy and is a muscle stimulator, nerve stimulator, and electric massager with independent dual channels that control four4 TENS unit pads electrodes for targeted pain relief. NOTE Kindly refer User Manual and Guide before use. The pulse amplitude, or intensity level, is adjustable from 0-100mA in 10mA increments, which is controlled by the respective knobs located at the top of the device, for both channels. Use electrode in pairs, when used with 1 electrode, the device will not work. Treatment is timed with the device, and the device will automatically shut off after a certain time period within setup..
Hollywog TENS Unit for Back Pain, WiTouch Pro Wireless & Wearable Electronic Pulse Muscle Stimulator for Pain Relief, Adhesive Stick Pads Included
USE IT ANYWHERE ALONG THE SPINE TO RELIEVE PAIN The WiTouch Pro TENS unit relieves lower, mid, and upper back pain from sciatica, arthritis, muscle tension, inflammation, and injury by delivering nerve stimulation through gentle electrical pulses. REVOLUTIONARY HIGH-QUALITY TECHNOLOGY Manufactured in Chattanooga, TN by Hollywog, the WiTouch Pro was the first wireless, wearable TENS unit on the market The lightweight, minimal design allows the TENS device to be worn discreetly under clothing. USE IT MANUALLY OR WITH YOUR SMARTPHONE Simply Apply gel pads and place the TENS unit anywhere along the spine where you feel pain Control the intensity and device settings with the buttons on the device or with the WiTouch Pro app, available on iOS and Android. 4 EFFECTIVE THERAPY PROGRAMS Choose from 4 electrotherapy programs, including a patented and exclusive WiTouch Pro treatment program Each program offers 15 levels of intensity with a professional strength power output of 0 110 mA Made and tested in USA. INCLUDES EVERYTHING YOU NEED TO GET STARTED You will receive the WiTouch Pro TENS Unit and accessories, including 3 pairs of exclusive Hollywog gel pads, 2 AAA batteries, a mini screwdriver to access the battery compartment, and a quickstart guide. Do not use this device if you have a cardiac pacemaker, implanted defibrillator or electronic device, or are connected to high frequency surgical equipment.
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)
POWERFUL THERAPY 2 times the power compared to the OMRON Pocket Pain Pro TENS unit makes it simple to find the right pain relief for multiple body areas. CUSTOMIZED CONTROL 6 body pain modes shoulder, lower back, arm, foot, leg, joint and 3 massage-like modes rub, tap, knead, each with 15 adjustable levels of power intensity to help relieve your pain. TENS TECHNOLOGY Scientific theory suggests that TENS technology blocks the pain signal from reaching the brain, increases blood circulation to targeted areas and stimulates your bodys natural painkillers. PORTABLE Compact and easily fits into purse, carry-on or briefcase for when you need it most. CONVENIENT User-friendly controls and a large display screen make for easy operation. LONG LIFE PADS Comfortable, self-adhesive TENS unit pads 1 pair are reusable up to 150 times with plastic holder for storage.
TENS Unit Muscle Stimulator Pro for Back Pain Relief, Shoulder Recovery and Physical Therapy, Electronic EMS Massager Machine with PMS Pulse for Effective Shock Therapy, Red
Versatile Pain Relief Experience drug-free pain relief with safe TENS therapy for back pain, neck pain, carpal tunnel, shoulder, knee, elbow, leg, and foot pain. The TENS unit targets specific muscle soreness and trouble areas, promoting muscle recovery.. All-in-One Kit This comprehensive kit includes a TENS EMS Pro massager electronic device with 36 modes and 20 intensity levels on each channel individually. It comes with 12 reusable square electrode replacement pads, 2 dual plug snap cables, USB-C charging cable, 2 pad holders, an instruction manual, and a premium travel carry case.. Portable Convenient This true independent TENS unit offers portable, fast, and easy muscle relaxation through electrical pulses, allowing you to use it anywhere you desire. Say goodbye to expensive physician visits and medication, as this device provides personal pain relief at home.. Complete Pain Relief Kit Neocarbon TENS PMS Unit Pro comes with a standard USB-C charging cable and 12 matching Electrode pads. Additionally, you'll receive 2 pad holders and a portable case for travel protection. With this kit, you have everything you need for a convenient and effective pain relief experience.. Fast Efficient Charging The USB-C port allows for a 2-hour full charge, providing twice the power than other models up to 50 hours of continuous use per charge. The easy-to-read LCD backlit screen with enlarged icons enhances the operating experience..
NURSAL 24 Modes TENS Unit Muscle Stimulator with Continuous Stimulation, Rechargeable Electronic Pulse Massager with 8 Pads for Back and Shoulder Pain Relief and Muscle Strength
24 Modes TENSEMS Steady Pulse - The 24 pre-programmed tens unit muscle stimulator Adapts Transcutaneous Electrical Nerve Stimulation technology which is clinically proven for safe and effective pain relief, and Electrical Muscle Stimulation uses electrical impulses and activates the muscles to improve and facilitate muscle performance, providing precise control to alleviate body soreness and muscle fatigue. The first 2 sub-modes provides steady and constant muscle stimulation. Memory Function NURSAL TENS machine remembers and sets the massage mode you have applied last time without selecting your preferred modes again and again when power on. Whats more, long press the home button to activate the screen lock function, it helps to prevent any accidental touch during the use, thus it enables a muscle relaxing time for your own.. Adjustable 20 Intensity Levels Timer NURSAL rechargeable TENS unit - equipped with 20 adjustable intensity levels - allows you to customize the frequency of the electrical impulses to fit your needs. Timer function lets you set an operating time limit 10-60 min, the default setting is 20 minutes. The timer indicator would keep you aware of the remaining time. With a built-in powerful rechargeable lithium battery, never worry about the suddenly power off. 8 Reusable Electrode Pads, 2 Outputs The strong self-adhesive property was added in the reusable electrode pads thus enables much better performance and easy clean up to 40 times uses for a long lifespan. The electronic TENS massager dual output design allows to use it for 2 different body areas, or by 2 people simultaneously. It is perfect TENS for back and sciatica pain, shoulder tension and muscle relief.. What you will receive 1 x TENS EMS Machine, 4 Palm Electrode Pads, 2 Large Rectangle Pads, 2 Small Pads, 2 x 12 Lead Wires, 1 x 14 Lead Wires, 1 x USB cable, ,1 x User Manual, 1 x Pad Holder, 1 x Pouch, 12-Month Warranty , and our Friendly Customer Service.
Easy@Home Rechargeable Compact Wireless TENS Unit - 510K Cleared, FSA Eligible Electric EMS Muscle Stimulator Pain Relief Therapy, Portable Pain Management Device EHE015
PAIN RELIEF WITH EMS MUSCLE STIMULATION Natural, drug-free and highly effective Electronic TENS UNIT and for pain relief of joints, back, knees, and more with pulse muscle stimulation effect. Whether chronic pain or sore muscles, EHE015 will suit your needs 510K cleared for safe home use. An ideal gift for Valentine's Day,Mother's Day,Father's Day,Christmas,Birthday.. WIRELESS DESIGN Design allows users to move freely and is discreet under clothing. No wire and no remote control compact design makes it very easy and convenient to carry and use. Suitable for use home, work, and on-the-go. NOTE ALIGN simulator snaps and electrode pad holes visually for proper connection before applying to skin. If the pad is not firmly pressed on the skin and you press button to start you will hear 6 beeps and then the unit will auto shut off.. PROGRAMMABLE AND EASY CONTROL 6 Automated Massage Programs and 20 Power Intensity Levels. Only 2-Button control, just turn on by pressing the onoff button and adjust the intensity by pressing or -.. RECHARGEABLE LONG-LASTING POWER Rechargeable lithium-ion battery provides long-lasting power to operate for multiple uses cycles adjustable manually up to 60 minutes.. NOTE Please CHARGE the unit before first-time use. 20-minute cycle with auto turnoff feature.. SAFETY AND WARRANTY We are so confident that you will love this product that we offer 1 Year PRODUCT Quality Guarantee DO NOT use the product if you have a cardiac pacemaker or an existing cardiac condition, implanted metal devicesscrews areas of the body or suffer from epilepsy. Please read the complete safety warnings before purchase. A Starter Gel Electrode Pad included..
MASTOGO Wireless TENS & EMS Unit Back Pain Relief Massager - APP Controlled Bluetooth EMS Muscle Stimulator Machine for Back Shoulder Leg Neck Pain Relief
Your Personal Tens Unit MassagerOur wireless tens unit muscle stimulator is your best back massagers at home. Safe Effective, works effectively for variety of pain conditions, such as muscle soreness, back pain, neck pain, labor pain, knee pain, joint pain, hip pain or more. Simply apply the tens unit pads to the needed area on your body, adjust the app for the strength and type of massage needed and stick to where you want to massage you can have pain relief.. Wireless Bluetooth Mobile Phone APP Control Mastogo TENS machine does not need troublesome wires and easy-lost remote controls. You only need to download the latest Dr.Stim APP to your phone and control your device. You can move around within the range of the Bluetooth connection.. Six Unique TENS EMS ModesMASTOGO wireless TENS EMS units programmed with kneading, acupuncture, beating, scraping, cupping, and exercise TENS modes and 6 EMS modes to apply to multiple body parts. Intensity can be adjusted from scale of 1 to 20 with time from 1-60 minutes.. Portable and Easy to UseTens unit wireless is a new massage experience that is small and easy to carry, diagrams allow you to find the right setting to help your situation. Great to use at the house, also as a good gift to your parents, lover, friends, an athlete or active person. Packed with lovely case, also perfect travel companion. Please read the instructions carefully before use.. Rechargeable with USBNever worry about need to replace dead batteries. Our wireless tens therapy machine has a long-lasting battery. Contact us if you have any questions or other help needed at any time. We are ready to help..
AUVON Dual Channel TENS EMS Unit 24 Modes Muscle Stimulator for Pain Relief, Rechargeable TENS Machine Massager with 12 Pads, ABS Pads Holder, USB Charger and Dust-Proof Storage Bag
TENS EMS Combination Unit. AUVON TENS PMS EMS device combines 2 therapies in 1 device, in which TENS provides safe, non-invasive, drug-free methods of pain relief used by doctors and physical therapists for years. PMS EMS brings elicitation of muscle contraction using electrical impulses and activates the muscles to assist in the increase of strength and endurance as a rehab and strength training tool.. Independent Dual Channel. You can choose different modes and intensities for channel A and channel B. For example, you could choose P1 mode in channel A with an intensity level of 3 for your shoulder. While in channel B, the P5 mode is being run with stronger intensity set to the level of 9 on your back as a back electric stimulator.. Multi-Functional with 24 Mode. 20 levels of intensity, 24 preprogrammed massage modes with adjustable time maximum to 90 min. With built-in powerful rechargeable lithium battery, the AUVON rechargeable TENS unit can give you continuous use up to 10 hours. Upgraded TENS Unit Pads. The Low impedance Solid Gel has been upgraded to the industry leading American adhesive, which can provide much better self-stick performance and easy clean up after 45 uses for a longer lifespan. Standard 2mm connector lead wires electrodes are classic and commonly used in the medical area, which makes it easier for you to find compatible accessories.. What You Receive 1 x AUVON Dual Channel TENS machine, 12pcs 5cm x 5cm Electrode Pads, 2 x Lead Wires 12 Wire, 1 x USB cable, 1 x Pouch, 1 x Professional User Manual, Our 12-Month Warranty, Friendly Customer Service and Lifetime Technical Support..
AUVON 4 Outputs TENS Unit EMS Muscle Stimulator Machine for Pain Relief Therapy with 24 Modes Electric Pulse Massager, 2" and 2"x4" Electrodes Pads (Black)
4 Channel A1, A2, B1, B2. Compared to dual channel TENS Unit, it allows you to apply up to 8 pads at the same time with the 4 outputs for much efficient pain relief. The independent AB channel can work in different modes and different levels of intensities e.g. you can select mode 7 with 3 intensity for your shoulders in channel A1 and A2, while in channel B1 and B2, this TENS machine can work as a back pain relief products in P3 with a much stronger intensity.. TENS EMS Unit. AUVON TENS EMS device combines 2 therapies in 1 device, in which TENS is a muscle stimulator for pain relief which provides safe, non-invasive, drug-free methods and has been used by doctors and physical therapists for years. EMS brings elicitation of muscle contraction using electrical impulses and activates the muscles to assist in the increase of strength and endurance as a rehab and strength training tool.. Large LCD Multi-Modes. A 3.69 large LCD backlit screen is used for this labor pain simulator and muscle massager with enlarged icons and buttons for much easier reading and operating experience You can set working time for your TENS unit muscle stimulator from 10 to 90 minutes, which will sufficiently satisfy your massaging needs With a built-in powerful rechargeable lithium battery, never worry about the suddenly power off. 10 Upgraded TENS Unit Pads. The Low impedance Solid Gel has been upgraded to the industry leading American adhesive, which can provide much better self-stick performance and easy clean up after 45 uses for a longer lifespan. Standard 2mm connector lead wires electrodes are classic and commonly used in the medical area, which makes it easier for you to find compatible accessories.. What You Receive 1 x AUVON 4-Channel TENS EMS Machine, 10pcs Electrode Pads 8pcs 2 x 2 Square Electrode Pads, 2pcs 2 x 4 Large Rectangle Pads, 4 x Lead Wires, 1 x USB cable, 1 x USB Charger, 1 x Pad Holder, 1 x Pouch, 1 x User Manual, our 12-Month Warranty, and Friendly Customer Service.
NURSAL TENS Unit Muscle Stimulator Machine for Pain Relief Therapy, Electric Stim Massager for Back, Neck, Muscle Pain Relief Product (FSA or HSA Eligible)
Why Choose Our TENS Units -Compared with other similar tens machine products, we think more for you With SMART MEMORY FUNCTION This electric muscle massager will remember your preference of mode setting, you do not need to search from 24 modes again.. With CONSTANT STEADY PULSE MODES Kneading mode 1 and mode 2 deliver stable electrical impulses which not fade in and out every few seconds, designed for those who are looking for a constant steady pulse massager. Our tens machine can use at the same time when you are working or doing housework, which other brands' tens unit can't do.. With SAFETY LOCK FUNCTION To prevent unintentional changes of mode or intensity, our NURSAL tens device adds a lock function. Long press the center button for 3s until the Lock symbol appears on the screen.. With 90MINS LONGER TIMER The rechargeable tens ems unit built-in15-90mins timer allows you to control your treatment process up to 90 minutes. A powerful rechargeable battery offers you 30H of continuous usage.. PROFESSIONAL MUSCLE PAIN RELIEF DEVICE. This physical therapy equipment is also equipped with independent AB dual channels, 24 pre-programmed TENS EMS therapies, each mode with 20 intensity levels to adjust, which can be used for relaxation with the max of 6 pads applied by two persons simultaneously..