--- product_id: 388574185 title: "The Flex Belt Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014)" brand: "the flex belt" price: "₩8569" currency: KRW in_stock: false reviews_count: 5 url: https://www.desertcart.kr/products/388574185-the-flex-belt-replacement-controller-and-charger-flex-belt-sold store_origin: KR region: South Korea --- # Rechargeable Power Compact Design User Manual Included The Flex Belt Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) **Brand:** the flex belt **Price:** ₩8569 **Availability:** ❌ Out of Stock ## Summary > ⚡ Charge Up Your Fitness Game! ## Quick Answers - **What is this?** The Flex Belt Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) by the flex belt - **How much does it cost?** ₩8569 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/388574185-the-flex-belt-replacement-controller-and-charger-flex-belt-sold) ## Best For - the flex belt enthusiasts ## Why This Product - Trusted the flex belt brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Stylish:** Chic black design complements your fitness gear. - • **Lightweight & Portable:** Weighing only 226.8g, take your fitness anywhere. - • **Unleash Your Flexibility:** Compatible with Flex Belt, Flex Mini, and Flex Arms for versatile workouts. - • **User-Friendly Experience:** Comes with an easy-to-follow instruction manual for seamless setup. - • **Power Up Your Performance:** Rechargeable controller ensures you’re always ready to go. ## Overview The Flex Belt Replacement Controller & Charger is a must-have accessory for your Flex Belt system. This sleek black controller is rechargeable, lightweight, and comes with an AC charger and user manual, ensuring you stay powered up and ready for your fitness journey. ## Description THE FLEX BELT controller is for use with: THE FLEX BELT, THE FLEX MINI or THE FLEX ARMS. This is a Replacement Controller only. Includes a 2-Year Limited . ## Features - For Use with: The Flex Belt, the flex Mini or the flex arms - Rechargeable and easy-to-use - Includes: rechargeable controller, AC Charger and instruction manual ## Technical Specifications | Specification | Value | |---------------|-------| | Color | Black | | Material Type | Plastic | | Included Components | AC Charger, Rechargeable Controller, Instruction Manual | | Batteries Included? | Yes | | Brand | THE FLEX BELT | | Department | unisex-adult | | Manufacturer | Slendertone Distribution Inc. | | Item model number | 0390-5014 | | Package Dimensions | 14.22 x 12.7 x 11.94 cm; 226.8 g | | ASIN | B01C3W3P3Q | ## Images ![The Flex Belt Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) - Image 1](https://m.media-amazon.com/images/I/41DXjJ9efML.jpg) ![The Flex Belt Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) - Image 2](https://m.media-amazon.com/images/I/31p6mTg-DlL.jpg) ![The Flex Belt Replacement Controller & Charger (Flex Belt Sold Separately), Black (0390-5014) - Image 3](https://m.media-amazon.com/images/I/31RRpMSrgmL.jpg) ## Questions & Answers **Q: What rechargeable battery brand/model fits the flex belt controller? Need exact/correct recommendations. Thanks.** A: This battery works: Kastar Cordless Phone Battery for V Tech 89-1323-00-00 80-1323-00-00 80-0099-00-00 8900990000 27910 Vtech . The plug that hooks in to the controller will need to be slightly sanded so it has 2 round corners rather than all square corners but I replaced all my old batteries with these batteries and they work great. See link for battery for pictures. **Q: I am needing just the piece that plugs into the wall. Do you sell that** A: Yes, it's available on TheFlexBelt.com and it's under Accessories, and it's called 'Replacement Charger Only'. **Q: ICan I buy the charger separately from the controller of flex belt** A: Yes, only on the Slendertone website (it works with Slendertone or Flex Belt). **Q: I just need the charger for the Flex belt, where can I get one?** A: You can buy it on the Slendertone website (they make Flex Belt) for $20. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Replacement for original *by T***J on Reviewed in the United States on 2 July 2021* This item works like a champ. I purchased to replace the original and it works very well. I get 4-5 uses from a single battery charge. That is very good. ### ⭐⭐⭐⭐⭐ It’s was delivered on time and with a picture of parcel on step *by K***. on Reviewed in Canada on 13 April 2021* Was just what I needed , thank you ### ⭐⭐⭐⭐⭐ Easy peasy *by A***E on Reviewed in the United States on 6 May 2019* This product is a great replacement part. I love the ease of purchase and the fact an entire Flex Belt unit purchase is not necessary. Thank you Flex Belt.The belt is an awesome tool for pain relief and tightening ab muscles. I love mine. Have used this for well over 2 years and still going strong with correct maintenance and daily use. --- ## 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.kr/products/388574185-the-flex-belt-replacement-controller-and-charger-flex-belt-sold](https://www.desertcart.kr/products/388574185-the-flex-belt-replacement-controller-and-charger-flex-belt-sold) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-05-10*