---
product_id: 64667551
title: "Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black)"
brand: "fitbit"
price: "Rp6850975"
currency: IDR
in_stock: false
category: "Fitbit"
url: https://www.desertcart.id/products/64667551-fitbit-flex-2-wireless-activity-tracker-and-sleep-wristband-black
store_origin: ID
region: Indonesia
---

# Smart notifications on wrist 20-day battery life Swim-proof & ocean-ready Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black)

**Brand:** fitbit
**Price:** Rp6850975
**Availability:** ❌ Out of Stock

## Summary

> ⌚️ Fitness that fits your lifestyle—anytime, anywhere.

## Quick Answers

- **What is this?** Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black) by fitbit
- **How much does it cost?** Rp6850975 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/64667551-fitbit-flex-2-wireless-activity-tracker-and-sleep-wristband-black)

## 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

- • **Effortless Smart Tracking:** Auto-recognizes workouts and logs activity so you stay focused, not fiddling.
- • **Stay Connected, Hands-Free:** Receive call & text alerts with unique vibrations and color-coded LED notifications.
- • **Ultra-Thin, Discreet Style:** Removable tracker fits invisibly in bands, bangles, or pendants—wear fitness your way.
- • **Seamless Swim & Shower Ready:** Life-proof design lets you track every stroke and splash without missing a beat.
- • **Sleep Smarter, Wake Refreshed:** Monitors sleep quality and wakes you silently with a gentle vibration alarm.

## Overview

The Fitbit Flex 2 is a sleek, ultra-thin wireless activity tracker designed for the modern professional. Swim-proof and life-proof, it tracks steps, distance, calories, active minutes, and sleep with smart automatic workout recognition. Its removable tracker fits discreetly into stylish bands or accessories, while 20-day battery life and smart notifications keep you connected and motivated all day long.

## Description

Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black) : desertcart.in: Sports, Fitness & Outdoors

## Features

- Track steps, distance, calories burned and active minutes
- 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
- Smart track automatically recognizes select workouts and records them to your Fitbit app
- Automatically track how long and how well you sleep and set a silent alarm to wake with a small vibration
- Get call and text notifications on your wrist with unique vibration patterns and color-coded LED lights
- LED display lights up to show progress toward your daily goal

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Fitbit |
| Material | Elastomer |
| Colour | Black |
| Compatible Devices | Smartphones |
| Product Dimensions | 16L x 9W x 11H Millimeters |
| Item Weight | 18 g |
| Battery Life | 20 Days |
| Sensor Type | Pedometer |
| Battery Description | Lithium Ion Polymer |
| UPC | 810351028888 |
| Global Trade Identification Number | 00810351028888 |
| Manufacturer | Fitbit |
| Item model number | FB403BK |
| ASIN | B01KH2PV4U |

## Product Details

- **Battery Description:** Lithium-Ion Polymer
- **Battery Life:** 20 Days
- **Brand:** Fitbit
- **Colour:** Black
- **Compatible Devices:** Smartphones
- **Item Weight:** 18 g
- **Material:** Elastomer
- **Product Dimensions:** 16L x 9W x 11H Millimeters
- **Sensor Type:** Sleep
- **UPC:** 810351028888

## Images

![Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black) - Image 1](https://m.media-amazon.com/images/I/21Fthy0PtHL.jpg)
![Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black) - Image 2](https://m.media-amazon.com/images/I/317TlajhHEL.jpg)
![Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black) - Image 3](https://m.media-amazon.com/images/I/31JOzSdXRxL.jpg)
![Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black) - Image 4](https://m.media-amazon.com/images/I/31MP7D1lapL.jpg)
![Fitbit Flex 2 Wireless Activity Tracker and Sleep Wristband (Black) - Image 5](https://m.media-amazon.com/images/I/41uOpBX-7YL.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.

## 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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**Shop now:** [https://www.desertcart.id/products/64667551-fitbit-flex-2-wireless-activity-tracker-and-sleep-wristband-black](https://www.desertcart.id/products/64667551-fitbit-flex-2-wireless-activity-tracker-and-sleep-wristband-black)

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-02-28*