--- product_id: 254771360 title: "Fitbit Flex 2, Black (US Version)" brand: "fitbit" price: "FREE" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.be/products/254771360-fitbit-flex-2-black-us-version store_origin: BE region: Belgium --- # SmartTrack auto workout detection Up to 5 days battery life Swim-proof & ocean-ready Fitbit Flex 2, Black (US Version) **Brand:** fitbit **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > ⌚️ Flex your fitness, not your schedule. ## Quick Answers - **What is this?** Fitbit Flex 2, Black (US Version) by fitbit - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/254771360-fitbit-flex-2-black-us-version) ## Best For - fitbit enthusiasts ## Why This Product - Trusted fitbit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Motivation in a Glance:** LED progress lights keep your daily goals front and center, pushing you to crush every milestone with style. - • **Stay Connected, Hands-Free:** Receive call and text notifications with unique vibrations and color-coded LEDs—stay in the loop without missing a step. - • **Ultra-Thin, Discreet Style:** Sleek removable tracker fits effortlessly into bands, pendants, or bangles—fitness that blends with your lifestyle. - • **Seamless Swim & Surf Tracking:** Dive into your fitness routine with a swim-proof, life-proof design that keeps up with every stroke and splash. - • **SmartTrack Workout Recognition:** Automatically logs your workouts so you never miss a beat or a rep, keeping your progress effortlessly on point. ## Overview The Fitbit Flex 2 is a sleek, ultra-thin fitness tracker designed for the active professional. Swim-proof and life-proof, it tracks steps, distance, calories, and active minutes with SmartTrack auto workout detection. With up to 5 days of battery life, discreet wearable options, and real-time call/text notifications, it seamlessly integrates health monitoring into your busy lifestyle. ## Description Buy Fitbit Flex 2 Fitness Wristband, Black - One Size, FB403BK online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase. Review: nice product - typical fitbit Review: It is not work - It is not works ## Features - Track steps, distance, calories burned and active minutes. LED display lights up to show progress toward your daily goal - Ultra-thin, removable tracker hides in bands, pendants and bangles - Swim-proof for tracking swimming, life-proof for wear in the ocean, shower, pool and beyond - SmartTrack automatically recognizes select workouts and records them to your Fitbit app - Get call and text notifications on your wrist with unique vibration patterns and color-coded LED lights ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01KH2PV4U | | Battery Average Life | 20 days | | Battery Description | Lithium-ion, not replaceable | | Best Sellers Rank | #55,772 in Sporting Goods ( See Top 100 in Sporting Goods ) #294 in Activity Trackers | | Brand | Fitbit | | Brand Name | Fitbit | | Color | Black | | Colour | Black | | Compatible Devices | Smartphones, Tablets, Desktops | | Compatible devices | Smartphones, Tablets, Desktops | | Customer Reviews | 4.0 out of 5 stars 4,595 Reviews | | Global Trade Identification Number | 00810351028888 | | Item Dimensions L x W x H | 16L x 9W x 11H millimeters | | Item Weight | 0.04 Pounds | | Item weight | 0.04 Pounds | | Manufacturer | Fitbit | | Manufacturer Part Number | FB403BK | | Material | Elastomer, Stainless Steel | | Material Type | Elastomer, Stainless Steel | | Model Number | FB403BK | | Number of Items | 1 | | Number of Packs | 1 | | Product dimensions | 16L x 9W x 11H millimeters | | Sensor Type | Accelerometer | | Size | Free size | | Software Update Supported to Date | unknown | | Team Name | Fitbit | | UPC | 810351028888 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Fitbit - **Colour:** Black - **Compatible devices:** Smartphones, Tablets, Desktops - **Material:** Elastomer, Stainless Steel - **Product dimensions:** 16L x 9W x 11H millimeters ## Images ![Fitbit Flex 2, Black (US Version) - Image 1](https://m.media-amazon.com/images/I/512XgdrRevL.jpg) ![Fitbit Flex 2, Black (US Version) - Image 2](https://m.media-amazon.com/images/I/51u9KUCDoZL.jpg) ![Fitbit Flex 2, Black (US Version) - Image 3](https://m.media-amazon.com/images/I/51OYN+G+xnL.jpg) ![Fitbit Flex 2, Black (US Version) - Image 4](https://m.media-amazon.com/images/I/51eWBnoMsNL.jpg) ![Fitbit Flex 2, Black (US Version) - Image 5](https://m.media-amazon.com/images/I/61IDr+JzUjL.jpg) ## Questions & Answers **Q: Does it come with charger or do you have to buy separately?** A: It comes with a charger. I have not been able to buy it separately. You have to buy a whole new Flex 2. **Q: Will this recognize activity from stationary cycling?** A: I don't think any one of these people really answered your question. It is not going to recognize that you are cycling and it will just run up your step count. I find this to be a problem because I am not taking any steps when I am riding my bike and don't want that counted as walking. **Q: do you have to have the app or a phone** A: If your phone is not compatible with the device (as mine was not compatible) then you MUST purchase a dongle to go with this particular tracker as it is not included in the purchase of the Fitbit Flex 2. With a dongle plugged into your computer, you pull up the Fitbit icon on your computer and tell it to sync if it has not synced in a while....but it will sync from time to time on its own. If your phone does work with the tracker, then you just download the app and you are set to go. **Q: Does this fitness tracker touch the skin? If so has anyone with a nickel allergy worn it for a substantial amount of time?** A: I have a severe nickel allergy -- rash, swelling, blisters. But the Fitbit Flex 2 band doesn't irritate my skin at all, even though I've been wearing it 24/7 since I got it. Granted, only the two little posts that secure the band (not the tracker itself) have any metal that touches my skin, but usually that would be enough to set my wrist on fire. When I researched before buying, the only official word I could get from Fitbit said the clasp is surgical grade stainless steel, which by definition shouldn't have any nickel in/on it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ nice product *by M***G on 6 September 2019* typical fitbit ### ⭐ It is not work *by H***N on 13 November 2019* It is not works ### ⭐⭐ Not as described *by S***D on 6 March 2024* The device looks amazing, stylish. Battery life is 24-36 Hours not even close to 2 days and they claim 5 days . The charger cable got broken on the 1st week. In short - Great design, poor performance. ## Frequently Bought Together - Fitbit Flex 2, Black (US Version), 1 Count - EXMRAT Compatible with Fitbit Flex 2 Charger Cable (2Pack, 30cm/1ft), USB Charger Charging Cable for Fitbit Flex 2 (Black, 2Pack) - LEEFOX Compatible with Fit bit Flex 2 Band, Replacement for Flex 2 Accessories Silicon Wristbands w/Fastener Clasp Fitness Strap for Original Flex 2, No Tracker --- ## 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.be/products/254771360-fitbit-flex-2-black-us-version](https://www.desertcart.be/products/254771360-fitbit-flex-2-black-us-version) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-10-11*