---
product_id: 34007901
title: "Flex 2, Black (US Version), 1 Count"
brand: "fitbit"
price: "B/.475"
currency: PAB
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.pa/products/34007901-flex-2-black-us-version-1-count
store_origin: PA
region: Panama
---

# Ultra-thin, discreet design 5-day battery life Swim-proof & tracks laps Flex 2, Black (US Version), 1 Count

**Brand:** fitbit
**Price:** B/.475
**Availability:** ✅ In Stock

## Summary

> 🏅 Flex your fitness with the sleekest, smartest swim-proof tracker around!

## Quick Answers

- **What is this?** Flex 2, Black (US Version), 1 Count by fitbit
- **How much does it cost?** B/.475 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/34007901-flex-2-black-us-version-1-count)

## 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

- • **Seamless Swim Tracking:** Dive in confidently—track every lap without missing a beat.
- • **Sleek & Versatile Wear:** Ultra-thin tracker fits bands, bangles, or pendants for your unique style.
- • **Waterproof & Life-Proof:** Wear it rain or shine, pool or shower—no interruptions to your flow.
- • **All-Day Activity & Sleep Insights:** Know your steps, calories, and sleep patterns effortlessly.
- • **SmartTrack™ Workout Recognition:** Automatically logs your workouts so you stay focused, not fiddling.

## Overview

The Fitbit Flex 2 is a slim, swim-proof fitness tracker that automatically monitors steps, distance, calories, active minutes, and sleep. Its SmartTrack™ technology recognizes workouts without manual input, while a discreet LED display keeps you connected to notifications. Designed for versatility, the removable tracker fits into various stylish accessories and offers up to 5 days of battery life, making it perfect for active professionals who want seamless health insights anytime, anywhere.

## Description

Product Description Meet the all-new Fitbit Flex 2—a slim, swim-proof fitness wristband that’s ready to go wherever life takes you. The ultra-thin, removable tracker hides in bands, bangles and pendants, so you can wear it in a way that’s all your own. Automatic all-day activity and sleep tracking show you how your entire day adds up, and SmartTrack automatic exercise recognition records your exercises for you. The discreet progress display uses color-coded LED lights to keep you connected to calls, texts and Reminders to Move. Plus you don’t have to worry about getting it wet—whether you’re swimming in the pool or running in the rain. It’s the next generation model of our most iconic tracker. No fuss, all fun, and fit for every you. Manufacturer Contact Information Customers contact: support@fitbit.com

Review: Highly recommend for you swimmers!!! Of course for runners too! - Ok, I am a longtime Fitbit user and was hoping the Fitbit2 would be a quantum improvement on an otherwise great product. After using it for a few weeks I can say that it certainly is. The core functions of the original Fitbit always served my running workout routine well. However I always wished I could use it in the pool. That said I was skeptical it would actually record my lap swim accurately. It worked great, better than hoped for. My first clue that this was a quantum improvement came after the first gym visit wearing the Fitbit2. It recognized that I was on a elliptical machine and recorded it promptly. For the swim, I set the pool length (finding how to do that was not easy though) and started in. I also set it to notify me when I passed my 45 minute first benchmark. I also used a watch and counter also to make things honest. At 45 minutes the band vibrated which I could feel in the water. After I found it had not only correctly timed the 1 hour swim, but had correctly calculated the distance and added to the Dashboard!! Wow, just what I needed!! I noticed a few concerns, but nothing that have kept me from being impressed. All and all, so far HIGHLY recommend. Pros: 1. Does all the original Fitbit did in a smaller more secure package 2. GREAT for swimming laps. No need to wear a separate swimming watch. 3. Update process was smooth 4. Better appearance and stronger clasp. Cons: 1. Seems to last about 5 days between charges, old one was 7. That may change as I stabilize my usage pattern. 2. Not simple to program swim mode. Seems simple after you figure it out but not immediately intuitive. 3. The way the device inserts into the band requires bending the band. This concerns me that band breakage such as with the Fitbit1 may become a problem again.
Review: Tiny, rugged, basic, and excellent! - This summer my fiance requested a Fitbit. One night there was a sale too good to pass up, so I quickly did as much research as I could and weighed it with what my fiance wanted in a fitness band. I got her the Alta back in late June and she loved it! After having it for a week or two and really getting acquainted with it, she started showing me all the stuff it tracked in the app and I was seriously impressed. As a longtime Samsung Gear Fit user, I saw the Fitbit app blew the Gear Fit's out of the water. When I originally got my Gear Fit I wanted something that tracked my heart rate and steps but also could show me time, texts, and notifications from certain apps, as I missed wearing an actual watch, but wanted some tech too. While I still wanted a watch, I decided to get myself the smallest, cheapest Fitbit so I too could utilize the app, and I am thrilled with this little guy. So these days I still wear my Gear Fit on my watch arm and the Flex 2 on my other wrist. It works for me and I am very happy. The thing I love about the Flex 2 is its size. It is so small! My one main problem with the Gear Fit was that it was just a bit too big to sleep with on, as it would cause my arm to really fall asleep badly, so I could never utilize the sleep function of the watch. Even the Alta my fiance has is too big for her (causes the same problem on her as my Samsung does with me) but this Flex 2 poses no such problem with me, so I have been really happy that I can now track my sleep. It has given me some serious insight into how I spend my sleeping hours. Overall, I lover this thing! The app is superb, the Fitbit is tiny, water resistant, and holds a good charge. The band is nice too. The next smartwatch I get will be more aesthetically pleasing and less fitness based because I've got this little Flex 2 that tracks all the fitness type stuff I need.

## Features

- Track steps, distance, calories burned, and active minutes
- Swim-proof for tracking swimming, life-proof for wear in the shower and beyond
- SmartTrackTM automatically recognizes select workouts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B01KH2PV4U |
| Batteries  | 1 CR2 batteries required. (included) |
| Best Sellers Rank | #322,464 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #991 in Activity & Fitness Trackers |
| Customer Reviews | 3.9 3.9 out of 5 stars (5,291) |
| Date First Available  | August 16, 2016 |
| Department  | womens |
| Is Discontinued By Manufacturer  | No |
| Item model number  | FB403BK |
| Manufacturer  | Fitbit Inc |
| Product Dimensions  | 10 x 0.45 x 0.37 inches; 0.64 ounces |

## Product Details

- **Battery Description:** Lithium-Ion
- **Brand:** Fitbit
- **Color:** Black
- **Compatible Devices:** Smartphones, Tablets, Desktops
- **Global Trade Identification Number:** 00810351028888
- **Item Weight:** 0.04 Pounds
- **Material:** Elastomer, Stainless Steel
- **Product Dimensions:** 0.64"L x 0.35"W x 0.45"H
- **Sensor Type:** Accelerometer
- **UPC:** 810351028888

## Images

![Flex 2, Black (US Version), 1 Count - Image 1](https://m.media-amazon.com/images/I/512XgdrRevL.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

### ⭐⭐⭐⭐⭐ Highly recommend for you swimmers!!! Of course for runners too!
*by S***S on October 15, 2016*

Ok, I am a longtime Fitbit user and was hoping the Fitbit2 would be a quantum improvement on an otherwise great product. After using it for a few weeks I can say that it certainly is. The core functions of the original Fitbit always served my running workout routine well. However I always wished I could use it in the pool. That said I was skeptical it would actually record my lap swim accurately. It worked great, better than hoped for. My first clue that this was a quantum improvement came after the first gym visit wearing the Fitbit2. It recognized that I was on a elliptical machine and recorded it promptly. For the swim, I set the pool length (finding how to do that was not easy though) and started in. I also set it to notify me when I passed my 45 minute first benchmark. I also used a watch and counter also to make things honest. At 45 minutes the band vibrated which I could feel in the water. After I found it had not only correctly timed the 1 hour swim, but had correctly calculated the distance and added to the Dashboard!! Wow, just what I needed!! I noticed a few concerns, but nothing that have kept me from being impressed. All and all, so far HIGHLY recommend. Pros: 1. Does all the original Fitbit did in a smaller more secure package 2. GREAT for swimming laps. No need to wear a separate swimming watch. 3. Update process was smooth 4. Better appearance and stronger clasp. Cons: 1. Seems to last about 5 days between charges, old one was 7. That may change as I stabilize my usage pattern. 2. Not simple to program swim mode. Seems simple after you figure it out but not immediately intuitive. 3. The way the device inserts into the band requires bending the band. This concerns me that band breakage such as with the Fitbit1 may become a problem again.

### ⭐⭐⭐⭐⭐ Tiny, rugged, basic, and excellent!
*by N***Z on October 2, 2017*

This summer my fiance requested a Fitbit. One night there was a sale too good to pass up, so I quickly did as much research as I could and weighed it with what my fiance wanted in a fitness band. I got her the Alta back in late June and she loved it! After having it for a week or two and really getting acquainted with it, she started showing me all the stuff it tracked in the app and I was seriously impressed. As a longtime Samsung Gear Fit user, I saw the Fitbit app blew the Gear Fit's out of the water. When I originally got my Gear Fit I wanted something that tracked my heart rate and steps but also could show me time, texts, and notifications from certain apps, as I missed wearing an actual watch, but wanted some tech too. While I still wanted a watch, I decided to get myself the smallest, cheapest Fitbit so I too could utilize the app, and I am thrilled with this little guy. So these days I still wear my Gear Fit on my watch arm and the Flex 2 on my other wrist. It works for me and I am very happy. The thing I love about the Flex 2 is its size. It is so small! My one main problem with the Gear Fit was that it was just a bit too big to sleep with on, as it would cause my arm to really fall asleep badly, so I could never utilize the sleep function of the watch. Even the Alta my fiance has is too big for her (causes the same problem on her as my Samsung does with me) but this Flex 2 poses no such problem with me, so I have been really happy that I can now track my sleep. It has given me some serious insight into how I spend my sleeping hours. Overall, I lover this thing! The app is superb, the Fitbit is tiny, water resistant, and holds a good charge. The band is nice too. The next smartwatch I get will be more aesthetically pleasing and less fitness based because I've got this little Flex 2 that tracks all the fitness type stuff I need.

### ⭐ Numerous defects: sealant leaking out of seam, and refusal to sync/connect
*by C***O on October 10, 2016*

UPDATE: 1 DEC 2016 I've gone through 2 Flex 2's already. One had glue or some sealant coming out of the seam of the casing. The latest one refuses to sync to my phone after the double-tap procedure. After doing a search online, it seems this is a hardware defect and has to be replaced. After having 5 Charge HR's fail, a Fitbit One fail, and a Fitbit Flex fail.... I'm officially giving up on Fitbit. The step count is also very inconsistent. Original Review: I've owned and used a variety of Fitbit products: Zip, One, Flex, and the Charge HR, as well as other fitness trackers like the Garmin Vivosmart HR, Vivoactive HR, Vivomove, and GPS fitness trackers like the Forerunner 101/305/901XT, Magellan, MotoACTV, Epson, and Timex. Where Fitbit wins over the competition is in its popularity and social accessibility. Other than that, there's no other advantage to Fitbit. I love my Garmin Vivoactive HR as it does everything the Fitbits do as well as the GPS trackers like the Forerunner. I took my Vivoactive HR through the Warrior Dash and it survived swimming, mud, shock/vibration, and being slammed against obstacles. The Forerunner 910XT works better for me on a bicycle due to having a mount for the handlebar. The other GPS trackers have either died on me due to extreme cold weather running or just performed poorly. I went through 5 (that's right, five) Charge HR units through warranty before Fitbit finally denied my warranty claims. They all failed with sweat/oil intrusion, sluggish syncing, and a battery life of 5 minutes. I tried numerous things: not charging them until it was necessary, charging them every night, taking them off when washing my hands, not working on my car with the Fitbit on my wrist, etc... short of keeping them unused in a box. They all failed and died. Judging by the number of comments on my 1-star Amazon review of the Charge HR, this was a COMMON problem. The Flex 2 claims to be water proof / swimproof, much like the Vivoactive HR and Forerunner 910XT (as well as any other Garmin GPS tracker), and seems to be the ONLY Fitbit product that is swimproof. I'm not sure why Fitbit didn't just make all of their products swimproof or waterproof to 5 ATM because it is idiotic not to do so on a daily-wear fitness tracker (that is exposed to sweat, rain, showers, etc...) The Flex 2 is noticeably slimmer and lighter than the original Flex. I like how they made the seal tighter for the tracker unit, but water still gets trapped in the band. The new clasp is also made better as there are lips to keep the metal clasps engaged with the band, and it is a tighter clip as well. Trying to remove the band is always a chore, so it doesn't come off accidentally as easily as the original Flex. There are no displays other than a series of LEDs, and I'm perfectly fine with that. After having used the Zip, One, Flex, and Charge HR, I can guarantee that you will not miss having a screen because you can see so much more via the app. I use my Garmin Vivoactive HR as a daily wear watch/fitness tracker/GPS trainer because that screen tells you time, and the Connect IQ apps have useful tools like a digital compass, AccuWeather minutecast, Accuweather forecasts, and some apps created by others like a Vo2Max app or a Triathlon mode app. Don't expect any of that from even the best Fitbit unit, so I don't really care if there is a screen on the Flex 2. The Flex 2 is small enough to wear on the same wrist as your dress watch, so it is a moot point. The Flex 2's step count is about the same as that of the Charge HR. The Garmin Vivoactive HR is really conservative on its step count and its floor count is practically worthless. I'd say the Vivoactive HR counts about 4000-5000 steps less per day than the Charge HR. Based on current testing, the Flex 2's step count is about the same as the Charge HR. Everything is cool except the clasp is a bit tight to remove, I'm expecting the band to break due to how tight the clasp is. Water still gets into the band, necessitating periodic cleanings to prevent mold/bacteria development. Durability awaits to be seen. Every single one of my old Fitbits (all 8 of them) are dead from sweat/oil intrusion, battery failure, and connectivity failure. I have a graveyard of dead Fitbits in my office. I will definitely keep my review updated as time goes on, because I am still not sold on Fitbits being durable enough to handle my fitness routines.

## 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

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-09*