BBy Bikram Nath·Researched from UK Amazon listings·Updated 2026-10-16·6 products compared
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What are the best TENS machines to buy in the UK?
Our top pick for TENS Machines in the UK is the AUVON 3-in-1 TENS Machine, 30 Modes, Rechargeable TENS/EMS/Relax Muscle Stimulator.
The AUVON 3-in-1 suits buyers who want TENS, EMS and RELAX in one rechargeable unit, with 30 modes, 40 current levels, 8 pads in two sizes and 24-month warranty support stated on the listing.
The AUVON 3-in-1 is our top TENS machine pick: its listing states TENS, EMS and RELAX functions, 30 modes, 40 current levels, up to 40 hours of use from a 300mAh battery, 8 pads in two sizes and 24-month warranty support. For a stated medical device class, the Med-Fit 3 lists Medical Class IIa and IEC60601-1 certification; for detailed settings, the Comfytemp TENS unit has independent A/B channels, 20 intensity levels and a DIY mode for frequency, pulse width and on/off time.
This guide compares six TENS machines from AUVON, Med-Fit, Comfytemp, Body Clock and GHTENS, using what each listing states: functions, modes and programmes, channels, intensity levels, power, pads, stated approvals, safety notices and warranty. Stated intensity ranges run from 16 levels on the GHTENS to 40 on the AUVON and Body Clock; the two Med-Fit listings give no intensity range.
Buying guide
What should you look for in TENS Machines?
1Functions and programmes: AUVON combines TENS, EMS and RELAX with 30 modes; Body Clock lists 60 programmes (30 TENS, 27 EMS and 3 Massage); GHTENS has 80 programmes (70 preset, 10 DIY) across TENS, EMS, IF, RUSS and DIY modes; Comfytemp has 24 modes (20 standard, 4 DIY) and the Med-Fit 3 has 7 (5 TENS, 2 EMS). Med-Fit 1 lists constant, modulation and burst modes, with pulse rate and pulse width you set.
2Channels and intensity: all six listings describe two channels. Comfytemp lets you use different settings on each channel, Med-Fit 3 different intensity levels per channel, and GHTENS adjusts intensity separately but runs the same mode and programme on both. Intensity: 40 levels on the AUVON and Body Clock, 20 on the Comfytemp and 16 on the GHTENS; the Med-Fit listings give no range.
3Power: AUVON states a 300mAh battery with up to 40 hours of use on a single charge and Comfytemp up to 21 hours of continuous use; Body Clock is USB rechargeable with a 3.7V Li-ion battery, and GHTENS has a built-in rechargeable battery with USB-C charging. Med-Fit 3 runs on a 9V battery and Med-Fit 1 on 2 x AA batteries, both included.
4Approvals and safety notices: Med-Fit 3 states Medical Class IIa and IEC60601-1 certification, Med-Fit 1 the medical device directive Class 2a and CE 2460, and Body Clock compliance with current Medical Device Regulations; the AUVON, Comfytemp and GHTENS listings name none. AUVON, Med-Fit 3 and GHTENS say not to use them during pregnancy or with a pacemaker (AUVON and Med-Fit 3 add epilepsy, GHTENS metal implants), and Med-Fit 1 says it is not suitable for use in pregnancy.
5Pads and warranty: AUVON includes 4 square 2"x 2" and 4 rectangle 2" x 4" pads, Comfytemp 10 pads in two sizes and GHTENS 8 reusable 50×50mm pads; the Med-Fit 3 kit has 8 pads and the Med-Fit 1 box 2 packs of 8 electrodes. The Body Clock listing does not list its pads, and AUVON's 24-month warranty support is the only warranty term on these listings.
Our process
How do we choose our picks?
We don’t lab-test products ourselves. Instead we synthesise current Amazon UK listings and published specs into clear, honest recommendations. We earn a commission if you buy through our links, but that never changes which products we rank.
Current UK availability
We check each pick against live Amazon UK catalogue data rather than last year’s model lists. Stock moves fast, so a listing can sell out after we publish.
Published specs
We compare manufacturer specifications so each pick is right for a real budget and use-case.
UK-specific fit
We factor in UK voltage and plug/fitting standards — details that generic global lists miss.
The AUVON 3-in-1 suits buyers who want TENS, EMS and RELAX in one rechargeable unit, with 30 modes, 40 current levels, 8 pads in two sizes and 24-month warranty support stated on the listing.
Modes
30 pre-programmed modes; TENS, EMS and RELAX functions
Intensity
40 current levels
Channels
CH1/CH2; 2 or 4 pads at the same time
Battery
300mAh; up to 40 hours on a single charge (per listing); Type-C charging
Timer
Adjustable up to 90 minutes, plus a continuous mode
Pads
4 square 2"x 2" and 4 rectangle 2" x 4"; up to 50 uses (per listing); standard 2mm connector
Warranty
AUVON 24-month warranty support
What we like
+24-month warranty support listed in the box contents
+Up to 40 hours of use on a single charge from a 300mAh battery, per the listing
+TENS, EMS and RELAX functions, with 30 modes and 40 current levels
+Standard 2mm connector leads and pads, per the listing
Worth noting
–The listing names no medical device class, standard or approval
–The listing says TENS units should not be used by individuals with pacemakers, pregnant women or those with epilepsy
£34.99Amazon.co.uk price as of 17 Oct, 19:00 (London time). Details
The Med-Fit 3 suits buyers who want a stated Medical Class IIa and IEC60601-1 certification in a dual-channel TENS and EMS unit, with 7 modes and a 9V battery in the kit.
Modes
7: 5 TENS and 2 EMS
Classification
Medical Class IIa; IEC60601-1 certified (per listing)
Channels
Dual, with different intensity levels per channel
Battery
9V battery, included
Pads
8 TENS pads and 2 leads in the kit
What we like
+States Medical Class IIa and IEC60601-1 certification
+Set different intensity levels on each of its two channels, per the listing
+8 pads, 2 leads and a 9V battery in the kit
Worth noting
–Runs on a 9V battery; the listing mentions no recharging
–The listing states no intensity range, timer or warranty term
–The listing says do not use if pregnant, epileptic or with a pacemaker
£32.95Amazon.co.uk price as of 17 Oct, 19:00 (London time). Details
Comfytemp Dual Channel TENS Machine for Muscle Stimulation, 24 Modes
The Comfytemp suits buyers who want independent A/B channels with DIY settings for frequency, pulse width and on/off time, a 10-60 mins timer and 10 pads in two sizes, per the listing.
Modes
24 preset: 20 standard + 4 DIY; DIY sets frequency, pulse width and on/off time
Intensity
20 levels
Channels
Independent A/B
Timer
10-60 mins
Battery
Rechargeable; up to 21 hours of continuous use (per listing)
Pads
10 PET pads: 2 large 2.4" x 4", 8 small 1.8" x 1.8"
What we like
+Independent A/B channels with 20 intensity levels
+Rechargeable battery for up to 21 hours of continuous use, per the listing
+3-inch screen with a key lock and a memory of the last-used settings
+10 pads in two sizes, plus a clip for a belt or pocket
Worth noting
–The listing names no medical device class, standard or approval
–The listing states no warranty term
£21.98£25.99−15%Amazon.co.uk price as of 17 Oct, 19:00 (London time). Details
Body Clock 3-in-1 Combo Elite Digital TENS and EMS Machine with Massage
The Body Clock Combo Elite suits buyers who want TENS, EMS and massage programmes in one unit, with Body Mapping, 40 intensity levels and a USB-rechargeable 3.7V Li-ion battery; the listing does not say which pads are included.
Modes
60 programmes: 30 TENS, 27 EMS and 3 Massage
Intensity
40 levels
Channels
Dual
Battery
USB rechargeable, 3.7V Li-ion
Timer
TENS and EMS 5–90 minutes; Massage programme 30 minutes
Classification
Compliant with current Medical Device Regulations (per listing)
Body Mapping
Neck, shoulders, back, glutes, hands, abdomen, feet, arms, legs or joints
What we like
+60 programmes (30 TENS, 27 EMS and 3 Massage) and 40 intensity levels
+Body Mapping for areas from the neck and shoulders to the feet and joints, per the listing
+Memory settings and a timer, with TENS and EMS times from 5–90 minutes
+The listing says it is compliant with current Medical Device Regulations
Worth noting
–The listing does not list the pads or leads included
–The listing states no warranty term
£109.95Amazon.co.uk price as of 17 Oct, 19:00 (London time). Details
The Med-Fit 1 suits buyers who want to set pulse rate and pulse width themselves on a dual-channel TENS unit, with Class 2a and CE 2460 stated and 2 packs of 8 electrodes in the box.
Modes
Constant, modulation and burst; pulse rate and pulse width set by the user
Classification
Medical device directive Class 2a; CE 2460 (per listing)
Channels
Dual
Battery
2 x AA batteries, included
Pads
2 packs of 8 self-adhesive electrodes; 2 patient leads; belt clip
What we like
+States compliance with the medical device directive Class 2a and CE 2460 certification
+Constant, modulation and burst modes, with pulse rate and pulse width you set yourself
+2 packs of 8 self-adhesive electrodes, a belt clip and 2 x AA batteries in the box
Worth noting
–Runs on 2 x AA batteries; the listing mentions no recharging
–The listing states no intensity range, timer or warranty term
–The listing says it is not suitable for use in pregnancy
£26.95Amazon.co.uk price as of 17 Oct, 19:00 (London time). Details
GHTENS Rechargeable TENS & EMS Unit with 5 Modes and 80 Programmes
The GHTENS suits buyers who want 80 programmes, including 10 DIY, and IF and RUSS modes alongside TENS and EMS, noting that both channels run the same programme.
Modes
TENS, EMS, IF, RUSS and DIY; 80 programmes, 70 preset and 10 DIY
Intensity
16 levels, adjustable separately on each channel
Channels
CH1 and CH2; same mode and programme on both
Battery
Built-in rechargeable; USB-C charging
Pads
8 reusable 50×50mm electrode pads; 2 lead wires
What we like
+80 programmes, 70 preset and 10 DIY, across TENS, EMS, IF, RUSS and DIY modes
+Intensity adjustable separately on each channel across 16 levels
+8 reusable 50×50mm pads, 2 lead wires and a USB-C cable included
Worth noting
–Both channels run the same mode and programme, per the listing
–The listing states no battery life, warranty term or medical approval
–The listing says it is not suitable during pregnancy or with a pacemaker or metal implants
£25.99Amazon.co.uk price as of 17 Oct, 19:00 (London time). Details
Product prices and availability are accurate as of 17 Oct, 19:00 (London time) and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Editor's Note
Three of the six listings state a classification or compliance (Med-Fit 3, Med-Fit 1 and Body Clock), and only AUVON states a warranty term. Battery life figures appear on two listings, AUVON and Comfytemp, and the Body Clock listing does not say which pads or leads come in the box.
Our Take
As a default, the AUVON 3-in-1: TENS, EMS and RELAX, 30 modes, 40 current levels, 8 pads in two sizes and 24-month warranty support on the listing. For a stated Medical Class IIa unit, the Med-Fit 3; for independent A/B channels with DIY settings and a 10-60 mins timer, the Comfytemp.
Questions & answers
Frequently asked questions
Which TENS machines also include EMS?
Five of the six listings name EMS alongside TENS: AUVON (with RELAX), Med-Fit 3, Comfytemp, Body Clock (with Massage) and GHTENS (with IF, RUSS and DIY modes). The Med-Fit 1 listing describes a TENS machine and does not mention EMS.
Are TENS machines rechargeable?
Four here are, per their listings: AUVON (300mAh, up to 40 hours on a single charge), Comfytemp (up to 21 hours of continuous use), Body Clock (USB rechargeable, 3.7V Li-ion) and GHTENS (USB-C). The Med-Fit 3 runs on a 9V battery and the Med-Fit 1 on 2 x AA batteries, both included.
Do TENS units have two channels?
All six here do, per their listings. Comfytemp lets you use different settings on each channel and Med-Fit 3 different intensity levels per channel; GHTENS runs the same mode and programme on both, with intensity adjustable separately; AUVON says its CH1/CH2 channels can run 2 or 4 pads at the same time.
Who should not use a TENS machine?
The listings carry their own notices. AUVON says TENS units should not be used by individuals with pacemakers, pregnant women or those with epilepsy; Med-Fit 3 says do not use if pregnant, epileptic or with a pacemaker; GHTENS says not suitable during pregnancy or with a pacemaker or metal implants; Med-Fit 1 says it is not suitable for use in pregnancy. The Comfytemp and Body Clock listings carry no such notice in the features we read.
Which TENS machines state a medical device classification?
Med-Fit 3 states Medical Class IIa and IEC60601-1 certification; Med-Fit 1 says it is fully compliant with the medical device directive Class 2a and lists CE 2460; Body Clock names no class but says it is compliant with current Medical Device Regulations. The AUVON, Comfytemp and GHTENS listings name no classification.
How many times can TENS pads be reused?
AUVON says its pads give up to 50 uses, and Comfytemp says rinsing renews the adhesion of its pads for 100+ reuse cycles; GHTENS calls its pads reusable. The Med-Fit 3 and Med-Fit 1 listings describe self-adhesive pads without a figure, and the Body Clock listing does not list its pads.
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