--- product_id: 46613339 title: "iStim Tens Unit Stimulator Machine - EV820 with 8 Electrodes Japanese Gel for Pain Management, Back Pain and Rehabilitation" brand: "istim" price: "¥12650" currency: JPY in_stock: true category: "I Stim" url: https://www.desertcart.jp/products/46613339-istim-tens-unit-stimulator-machine-ev820-with-8-electrodes-japanese store_origin: JP region: Japan --- # 2-channel digital TENS stimulator 9V battery powered for portability 8 Japanese gel electrode pads iStim Tens Unit Stimulator Machine - EV820 with 8 Electrodes Japanese Gel for Pain Management, Back Pain and Rehabilitation **Brand:** istim **Price:** ¥12650 **Availability:** ✅ In Stock ## Summary > ⚡ Zap pain, not your lifestyle — relief that keeps up with you! ## Quick Answers - **What is this?** iStim Tens Unit Stimulator Machine - EV820 with 8 Electrodes Japanese Gel for Pain Management, Back Pain and Rehabilitation by istim - **How much does it cost?** ¥12650 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/46613339-istim-tens-unit-stimulator-machine-ev820-with-8-electrodes-japanese) ## 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 - • **5 Modes & 12 Preset Programs:** Versatile stimulation options designed by professionals to tackle chronic and acute pain effectively. - • **Clinically Approved & Drug-Free:** 510K cleared, IEC certified, and safe for OTC use—natural pain relief without side effects or prescriptions. - • **FSA/HSA Eligible & Travel Ready:** Use your health savings benefits and enjoy portable pain management anywhere with included 9V battery. - • **Premium Japanese Gel Electrodes:** SEKISUI biocompatible gel ensures superior conductivity and comfort, even for sensitive skin. - • **Dual-Channel Precision Pain Relief:** Target multiple areas simultaneously with 2 independent channels for customized therapy. ## Overview The iStim EV-820 TENS Unit is a compact, dual-channel digital stimulator delivering 5 modes and 12 preset programs for effective pain management. Equipped with 8 high-grade SEKISUI Japanese gel electrodes, it ensures optimal conductivity and comfort. Clinically approved and drug-free, this portable device is battery-powered and FSA/HSA eligible, making it a trusted choice for professional-grade pain relief and rehabilitation at home or on the go. ## Description Buy iStim Tens Unit Stimulator Machine - EV820 with 8 Electrodes Japanese Gel for Pain Management, Back Pain and Rehabilitation on desertcart.com ✓ FREE SHIPPING on qualified orders ## 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. - iStim EV-820: Digital TENS stimulator device comes with 2 channels, 5 TENS modes and 12 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-820 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: 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. - INCLUDING: Tens Unit x 1; Electrode Pads x 8; Lead Wires x 2 ; Instruction Manual x 1; Quick Guide x 1; 9V Battery 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0725CL4R9 | | Batteries | 1 9V batteries required. | | Best Sellers Rank | #85,453 in Health & Household ( See Top 100 in Health & Household ) #187 in Muscle Stimulators & Accessories | | Customer Reviews | 4.5 4.5 out of 5 stars (1,526) | | Date First Available | May 4, 2017 | | Is Discontinued By Manufacturer | No | | Item model number | YYOJ043 | | Manufacturer | Everyway4all | | Product Dimensions | 3.98 x 2.4 x 0.96 inches; 1.01 Pounds | ## Images ![iStim Tens Unit Stimulator Machine - EV820 with 8 Electrodes Japanese Gel for Pain Management, Back Pain and Rehabilitation - Image 1](https://m.media-amazon.com/images/I/610ESjkLvJL.jpg) ## Questions & Answers **Q: What's the difference between this machine and the one that sells for over $200 in Amazon?** A: I have the 7000 unit and have worked with this one. Both are great. A good unit should not cost at max more than $60 if it has a few extra accessories. **Q: What size are the lead wire connectors, the pieces that connect the 2 sets of wires together? Its usually in mm?** A: I searched the pamphlet that came with the TENS unit, but I could not find the measurement. I am a nurse and see that the wire end is 1 mm and the electrode lead receiver is 4mm. **Q: How much Amperage power does it have?** A: Pulse Amplitude: Adjustable, 0-100 mA peak into 500 ohm load •Wave Form: Asymmetrical Bi-Phasic Square Pulse •Size: 10.1cm(L) x 6.1cm(W) x 2.45cm(H) •Weight: 150 grams with battery. •Pulse Rate: Adjustable, from 2 to 150 Hz, 1Hz/Step •Pulse Width: Adjustable, from 50 to 300 microseconds, 10μs/step •Modes: B(Burst), N(Normal), M(Modulation), SD1(Strength Duration), SD2, P(P1-12) •Timer: Adjustable, from 5 to 60 minutes or Continuous. **Q: I have to wear the tens unit in the gym. Is this tens unit smaller enough to put in your pocket or a bag around your waist?** A: Hello, thank you for your questions and the device dim. 2.4x4x1 it should be fit your pocket or bag. I hope you enjoy this device in the gym:) ## Frequently Bought Together - iStim Tens Unit Stimulator Machine - EV820 with 8 Electrodes Japanese Gel for Pain Management, Back Pain and Rehabilitation - iSTIM Super Soft 2"x2" TENS Unit Electrodes for TENS Massage EMS - 100% Japanese Gel (2"x2"-16 Pieces) - iStim Super Soft 2"x2" TENS Unit Electrodes for TENS Massage EMS - 100% Japanese Gel (2"x4" - 16 Pieces) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/46613339-istim-tens-unit-stimulator-machine-ev820-with-8-electrodes-japanese](https://www.desertcart.jp/products/46613339-istim-tens-unit-stimulator-machine-ev820-with-8-electrodes-japanese) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-14*