---
product_id: 72163018
title: "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)"
brand: "istim"
price: "¥26738"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/72163018-istim-ev-804-tens-ems-2-channel-rechargeable-combo-machine
store_origin: JP
region: Japan
---

# 2-channel dual stimulation 7 modes & 24 programs Rechargeable battery 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)

**Brand:** istim
**Price:** ¥26738
**Availability:** ✅ In Stock

## Summary

> ⚡ Recharge your recovery, relieve pain like a pro!

## Quick Answers

- **What is this?** 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) by istim
- **How much does it cost?** ¥26738 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/72163018-istim-ev-804-tens-ems-2-channel-rechargeable-combo-machine)

## 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

- • **Dual-Channel Powerhouse:** Simultaneously target multiple pain points or muscle groups with 2 independent channels for personalized relief.
- • **Safe & Certified Relief:** 510K approved, IEC certified, drug-free pain management trusted by professionals—no prescription needed.
- • **Versatile Therapy Modes:** Choose from 7 TENS and EMS modes plus 24 preset programs tailored for pain relief, muscle recovery, and strengthening.
- • **Premium Japanese Gel Pads:** Experience superior conductivity and skin comfort with biocompatible SEKISUI gel pads designed for sensitive skin.
- • **FSA/HSA Eligible & Rechargeable:** Invest smartly in your wellness with a rechargeable device that qualifies for flexible spending accounts.

## Overview

The iSTIM EV-804 is a professional-grade, rechargeable TENS/EMS combo device featuring 2 independent channels, 7 therapy modes, and 24 preset programs. It uses premium Japanese SEKISUI gel electrode pads for optimal conductivity and comfort, offering safe, drug-free pain relief and muscle stimulation. Certified and FDA 510K approved, it’s designed for chronic and acute pain management, muscle relaxation, and strengthening, making it an essential tool for modern wellness routines.

## Description

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)

## Features

- TENS: "Transcutaneous Electrical Nerve Stimulation"- a safe, 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, Tens unit could effectively block the pain signal to people’s brain. At the same times, increases natural endorphins, which is a natural pain reliever. In many cases, the reduction or elimination of pain lasts longer than the actual period of stimulation.
- EMS: “Electrical Muscle Stimulation” is an internationally accepted and proven 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. When the pulse ceases, the muscle relaxes and the cycle starts over again.
- iSTIM EV-804: Digital TENS EMS combo stimulator comes with 2 channels, 5 TENS modes, 2 EMS modes and 24 preset 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 for 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. No prescription needed. Safe, All-Natural, Drug Free and Long-Lasting Pain Relief. 510K approved for OTC use and 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 2; USB Charger & Lead x 1 [NOTE: DO NOT USE EXTRA ELECTRODE GEL!!]
- FSA/HSA Eligible: This product qualifies as FSA/HSA eligible, meaning you can use your flexible spending or health savings account to purchase it.

## Product Details

- **Use for:** Whole Body
- **Power Source:** Battery Powered
- **Material:** Plastic
- **Item Weight:** 150 Grams
- **Brand:** iSTIM

## Images

![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) - Image 1](https://m.media-amazon.com/images/I/612e2dcjq-L.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 Japan*
*Store origin: JP*
*Last updated: 2026-01-29*