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Product guide

Comfytemp 4-Output TENS Unit, 20 Modes

Comfytemp’s 4-output TENS unit offers four channels, 20 modes, and independently adjustable A/B channel intensities for sessions across multiple areas. Its custom mode and broad electrode-pad selection add flexibility, while customer feedback suggests that controls and instructions may take some getting used to.

At a glance

Four outputs are presented for covering multiple areas in a session. The listing also describes separate intensity control for A/B channels.
Choose from 19 preset modes and a customizable USER mode, with 20 intensity levels and 10-to-60-minute session timers.
USER mode lets users set frequency and pulse width within the listed ranges.
The device has a 3-inch screen, memory for the last mode and setting, and a key lock.
The listing describes 10 pads in three sizes and says they can be refreshed by rinsing and air-drying.

Price

$23.69Save 21%

Reference price: ~~$29.99~~

Price checked: Nov 13, 2026

View offer Ahead of Black FridayExplore the selection

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Pros and cons

Pros

Four outputs and separate A/B intensity settings offer more placement and adjustment options than a dual-channel unit, according to the listing.
Custom USER settings, 19 presets, and adjustable session duration provide several ways to tailor a session.
A large screen and saved last-used setting may reduce repeated setup.

Cons

The listing does not specify battery capacity or runtime, so endurance between charges cannot be judged from the stated battery type alone.

Technical specifications

14 specifications

Identity
Brand	Shenzhen Yicaiwangluo Technology Co.,Ltd

Channels and settings
Outputs	4 Outputs
Modes	20 modes (19 preset + 1 customizable USER Mode)
Intensity levels	20 adjustable intensity levels
Session timer	10 to 60 minutes
Channel control	Independent A/B channels operate in separate intensities
USER mode frequency	2-80Hz
USER mode pulse width	120-400us

Display and handling
Screen	3-inch high-definition large screen
Functions	key lock function
Memory	remember the last used mode and setting
Pad reuse claim	100+ cycles
Package dimensions	7.17 x 5.12 x 2.72 inches; 1.01 pounds
Battery	1 Lithium Ion batteries required. (included)

What to know before buying

The listing says four outputs and independent A/B channels but does not clearly explain how the four outputs map to the two channels. Confirm the control and pad arrangement if simultaneous placement across several areas is important. The listed pad dimensions omit units, and the stated 100+ reuse cycles are a manufacturer claim.

What’s in the box

Portable carrying caseCheck selected pack
10 electrode padsCheck selected pack
Lithium-ion batteryIncluded

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

People seeking a TENS unit with multiple outputs for pad placement across more than one area.
Buyers who want several preset modes plus adjustable USER-mode frequency and pulse width.
Users who value a large screen and memory for the previous setting.

Less suited to

Buyers who need clearly documented four-channel independent control or confirmed simultaneous operation across four outputs.
Anyone who needs a published battery runtime or capacity before choosing a portable device.

Comfytemp 4-Output TENS Unit, 20 Modes · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 429 ratings

5 stars75%75%
4 stars12%12%
3 stars5%5%
2 stars2%2%
1 star6%6%

Customer feedback is generally positive about device quality, function, pain relief, battery life, compactness, and portability. Some report that settings are easy to manage, while others find them complicated, and opinions on the instructions are also mixed. That matters for a unit with multiple modes and custom controls, so buyers who prefer simple setup may want to allow time to learn it. The positive battery comments are customer impressions, not a stated runtime specification.

Positive themes

Customers report positive experiences with device quality, functionality, pain relief, battery life, and portability.

Mixed feedback

Feedback is divided on whether the settings are easy to manage.
Opinions differ on whether the instructions are clear and thorough.

Frequently asked questions

How many modes and intensity levels does it offer?

The listing specifies 20 modes, including 19 presets and one customizable USER mode, plus 20 adjustable intensity levels.

Can it be used across several areas at once?

The listing promotes four outputs for broader coverage and describes independent A/B channel intensities. It does not clearly explain how the outputs map to channels, so confirm the arrangement if this matters for your use.

What can be adjusted in USER mode?

The listing gives a frequency range of 2-80Hz and a pulse-width range of 120-400us for USER mode.

What pads are described?

The listing claims 10 pads: two large, four medium, and four small. It provides dimensions without units and claims the pads can be reused for 100+ cycles after cleaning.