---
product_id: 530513934
title: "iStim EV-804 TENS/EMS 2 Channel Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Pain Management- 7 modes (Including 8 Pieces Electrodes Pads)"
brand: "istim"
price: "NT$5702"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/530513934-istim-ev-804-tens-ems-2-channel-combo-machine-unit
store_origin: TW
region: Taiwan
---

# 2-channel dual stimulation long-lasting 9V battery power 8 premium Japanese electrode pads iStim EV-804 TENS/EMS 2 Channel Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Pain Management- 7 modes (Including 8 Pieces Electrodes Pads)

**Brand:** istim
**Price:** NT$5702
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Your Recovery, Pain-Free and On-Demand!

## Quick Answers

- **What is this?** iStim EV-804 TENS/EMS 2 Channel Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Pain Management- 7 modes (Including 8 Pieces Electrodes Pads) by istim
- **How much does it cost?** NT$5702 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/530513934-istim-ev-804-tens-ems-2-channel-combo-machine-unit)

## Best For

- istim enthusiasts

## Why This Product

- Trusted istim brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **7 Dynamic Modes:** Choose from 5 TENS and 2 EMS modes plus 12 presets to customize your pain management and muscle recovery.
- • **Clinically Trusted Tech:** Harness decades of professional-grade TENS and EMS therapy, drug-free and non-invasive.
- • **Dual-Channel Powerhouse:** Simultaneously target multiple pain points with 2 independent channels for personalized relief.
- • **Premium Japanese Gel Pads:** Experience superior conductivity and skin comfort with biocompatible SEKISUI gel pads designed for sensitive skin.
- • **Certified Safety & Quality:** IEC60601-1 and EMC certified, made in Taiwan, ensuring reliable, safe, and effective pain relief.

## Overview

The iStim EV-804 is a professional-grade 2-channel TENS/EMS combo device designed for effective, drug-free pain relief and muscle stimulation. Featuring 7 modes and 12 presets, it delivers customizable therapy through high-quality Japanese gel electrode pads. Certified for safety and made in Taiwan, it offers a trusted solution for chronic and acute pain management, muscle relaxation, and strengthening.

## Description

EV-804 TENS/EMS 2 Channel Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Pain Management- 7 modes (Including 8 Pieces Electrodes Pads)

## Features

- ✨TENS: "Transcutaneous Electrical Nerve Stimulation"- a non-invasive, drug-free method of pain relief used by Physical Therapists and professional Doctors for over decades. By delivering stable pulses to the skin to stimulate nerve fibers, the Tens unit could effectively block the pain signal in people’s brains.
- ✨EMS: “Electrical Muscle Stimulation” is an internationally accepted way of treating muscular injuries. It works by sending electronic pulses to the muscle needing treatment; this causes the muscle to exercise passively. When the muscle receives this signal, it contracts as if the brain has sent the signal itself. As the signal strength increases, the muscle flexes as in physical exercise.
- ✨iSTIM EV-804: Digital TENS EMS combo stimulator comes with 2 channels, 5 TENS modes 2 EMS modes and 12Preset programs, sending comfortable impulses through the skin that stimulate the nerve fibers in the treatment area. Effectively Block the pain signal to your brain! Safe and highly effective stimulation helps in treating chronic or acute pain (e.g., shoulder tension, back pain, arthritic, knee pain) and provides muscle relaxation and muscle strengthening.
- ✨JAPANESE ELECTRODE PADS: High-grade, and biocompatible SEKISUI Japanese gel, which facilitates efficient conducting of the electrical stimulator’s current to the patient’s skin in a dispersed manner. 100% SEKISUI Japanese Gel is the harmless ingredients and the best fit for even sensitive skin users. Use the iStim EV-804 with our best electrodes, making your every pain relief treatment more effective with perfect and comfortable experience [NOTE: DO NOT USE Extra Electrode Gel]
- ✨APPROVAL + PRODUCT SET: Approved for the pain relief product. Safe, All-Natural, Drug Free and Long-Lasting Pain Relief. Safety regulations (IEC60601-1, IEC60601-1-2 EMC) certified. Made in Taiwan. PRODUCT SET: Tens + EMS combo Unit x 1; Electrode Pads x 8; Lead Wires x 2 ; Instruction Manual x 1; Quick Guide x 1; 9V Battery x 1; Paper Case x 1 [NOTE: DO NOT USE EXTRA ELECTRODE GEL!!]

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Units | 1.00 Count |
| Brand | iSTIM |
| Country of origin | Taiwan |

## Product Details

- **Use for:** Back
- **Power source:** Battery Powered
- **Material:** Plastic
- **Item weight:** 150 Grams
- **Brand:** iSTIM
- **Colour:** White
- **Special feature:** Rechargeable
- **Massager form:** Massage Mat
- **Specific uses for product:** Arthritis
- **Product dimensions:** 10.1L x 6.1W x 2.5H centimetres

## Images

![iStim EV-804 TENS/EMS 2 Channel Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Pain Management- 7 modes (Including 8 Pieces Electrodes Pads) - Image 1](https://m.media-amazon.com/images/I/71D+ucxGMHL.jpg)

## Questions & Answers

**Q: What are the dimensions of the unit?**
A: A little bigger than s cigarette pack.

**Q: is there a "continuous mode" (no forced shutdown after 10,15, or 30 minutes)?**
A: If you change the time settings, you can have it running until it run out of charge. So, yes there is

**Q: asked if battery can be replaced you said no-how long does the lithium battery last then?**
A: Mine is about 1-1/2 years old and only has 1/2 the power strength it used to.

**Q: My unit came with a white usb charger... has anyone else got a white charger too? could it be something wrong with my charger adapter?**
A: I don't think they color-match the unit and the charger.

## Frequently Bought Together

- iSTIM EV-804 TENS/EMS 2 Channel Rechargeable Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Management- 7 modes/24 Programs/Backlit (Including Electrodes Pads)
- iStim Super Soft 2"x2" TENS Unit Electrodes for TENS Massage EMS Unit/Muscle Stimulator - 100% Japanese Gel - 16 Pieces Reusable Electrode Pads (2"x2"- 16 Pieces - Black)
- Spectra 360 Premium Electrode Gel for ECG, TENS, Monitoring, Pediatrics Soothing Gel Anti-Irritation 8.5 oz Tube - Each

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-22*