---
product_id: 257050
title: "Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large"
brand: "fitbit"
price: "MX$5364"
currency: MXN
in_stock: true
category: "Fitbit"
url: https://www.desertcart.mx/products/257050-fitbit-flex-wireless-activity-sleep-wristband-black-small-large
store_origin: MX
region: Mexico
---

# Water resistant up to 1 ATM Bluetooth 4.0 wireless sync 7-10 days battery life Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large

**Brand:** fitbit
**Price:** MX$5364
**Availability:** ✅ In Stock

## Summary

> ⌚ Elevate your daily grind with Fitbit Flex—where style meets unstoppable tracking!

## Quick Answers

- **What is this?** Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large by fitbit
- **How much does it cost?** MX$5364 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/257050-fitbit-flex-wireless-activity-sleep-wristband-black-small-large)

## 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

- • **Sweat & Splash Proof:** Water resistant up to 1 ATM—wear it rain or shine, no interruptions to your hustle.
- • **Silent Smart Wake Alarm:** Wake up refreshed without disturbing your partner—start your day on your terms.
- • **All-Day & Night Tracking:** Tracks steps, calories, active minutes, and sleep cycles—your 24/7 wellness companion.
- • **Custom Fit & Sleek Design:** Includes small and large bands with interchangeable clasps—comfort meets style for every wrist.
- • **Seamless Wireless Syncing:** Effortlessly syncs stats to 150+ devices within 20 feet—stay connected without the hassle.

## Overview

The Fitbit Flex Wireless Activity + Sleep Wristband is a sleek, lightweight fitness tracker that wirelessly syncs with over 150 leading smartphones and computers via Bluetooth 4.0. It monitors steps, distance, calories burned, active minutes, and sleep quality, featuring a silent wake alarm and LED progress indicators. Water resistant up to 1 ATM, it’s designed for everyday wear with interchangeable bands for a perfect fit and offers a robust 7-10 day battery life to keep you moving without interruption.

## Description

Product Description Never stop moving with Fitbit Flex. Wear this slim, stylish device all the time and get the motivation you need to get out and be more active. It tracks steps, distance, and calories burned and shows you how you’re stacking up against your daily goals. At night, it tracks your sleep cycle, helps you learn how to sleep better, and wakes you silently in the morning. Access your stats anytime on your computer, tablet or from leading smartphones – both iPhone and Android. Flex is your perfect companion, it’s with you everywhere… even in the shower. Plus, it looks good no matter what you’re wearing. From the Manufacturer • Certain features like Auto Sleep Tracking and SmartTrack may be disabled when using this accessory. Classic accessory bands are the recommended accessory for high intensity workouts and sleep tracking. • Do not wear the Flex 2 Pendant accessory while sleeping or during high intensity activity, as doing so could create a choking hazard. • Flex 2 Pendant accessories contain magnets. Magnets may interfere with pacemakers, defibrillators, or other medical devices. Consult your physician and the manufacturer of your medical device before using to determine if these accessories are safe for you. If the accessories may be interfering with your pacemaker, defibrillator, or other medical device, do not wear the accessories. Buying Guide Move it up: Since blood increases further up your arm, wear your tracker higher on your wrist to improve the heart rate signal during workouts. Start by moving the device up to three finger widths above your wrist bone, then experiment with slightly lower placement. Keep it secure: The less your tracker moves during exercise, the more chance you have of maintaining a heart rate signal throughout the activity. Do not wear the band too tightly, as this can restrict blood flow and goes against our wear and care guidelines. Hold steady for ten seconds: High intensity exercises or activities that cause you to keep your wrist bent (like push-ups) or move your arms vigorously (like dance) may interfere with heart rate signals. If you stop seeing a signal during these types of activities, hold your wrist steady for ten seconds during breaks to get your reading. Manufacturer Contact Information Customers contact: support@fitbit.com

## Features

- Rubber
- Made in USA or Imported
- One syncs automatically and wireless to tablets, computers and 150+ leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology. Syncing two computers requires Internet connection and USB port. Syncing to mobile devices requires Bluetooth and Internet connection. Syncing range: 20 feet. Call notifications via Bluetooth 4.0
- Water Resistance: Charge has been tested up to 1 ATM meaning it is sweat, rain and splash proof. However, the device is not swim proof. We also recommend taking charge off before showering because, as with any wearable device, it’s best for your skin if the band stays dry and clean
- Warning: Do not use if you have a pacemaker or other internal, or implanted medical device. Not intended for use by children under 13. Always consult your physician. Slippery when wet
- We recommend charging your device every few days to ensure you are always tracking. Charge time: One to two hours. Battery life: up to 7 - 10 days. Battery type: Lithium-polymer
- Syncs with Windows Vista and later, Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices
- Tracks steps, distance, calories burned and active minutes
- Monitor how long and well you sleep
- Wakes you (and not your partner) with a silent wake alarm
- LED lights show how your day is stacking up against your goal
- Slim, comfortable and easy to wear (sold with both large and small wristbands included with an interchangeable clasp)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BGO0Q9O |
| Additional Features | Activity Tracker, pedometer, sleep_monitor |
| Age Range Description | Adult |
| Band Color | black |
| Band Material Type | Silicone |
| Battery Average Life | 48 Hours |
| Battery Capacity | 330 Amp Hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 1.5 Hours |
| Best Sellers Rank | #431,231 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1,318 in Activity & Fitness Trackers |
| Brand | Fitbit |
| Built-In Media | Wristbands (large and small) and interchangeable clasp |
| Case Material Type | Plastic |
| Clasp Type | Deployant Clasp |
| Color | Black |
| Communication Feature | Bluetooth, USB |
| Compatible Devices | Samsung Galaxy Note 10.1, Samsung Galaxy Note II, Samsung Galaxy S III, Samsung Galaxy S4, iPad 3, iPad 4, iPad mini, iPhone 4S and up, iPod Touch (5th generation) |
| Compatible Phone Models | [iPhone 4S and up, Samsung Galaxy S4, Samsung Galaxy S III, Samsung Galaxy Note II] |
| Connectivity Technology | Bluetooth, USB |
| Controller Type | IOS |
| Customer Reviews | 3.9 out of 5 stars 22,335 Reviews |
| Display Type | LED |
| External Testing Certification | FCC, CE, R&TTE |
| GPS Geotagging Functionality | No GPS |
| Global Trade Identification Number | 00713524579838, 00810351024606, 00898628002649 |
| Human Interface Input | Touchscreen |
| Item Dimensions | 0.6 x 0.38 x 8.2 inches |
| Item Weight | 0.2 Pounds |
| Manufacturer | Fitbit Inc |
| Manufacturer Contact Information | Customers contact: support@fitbit.com |
| Metrics Measured | accelerometer |
| Model Name | flex |
| Model Number | RZS-000-01 |
| Operating System | Android, Apple_iOS, Apple_iOS, Android, Windows, Windows |
| Screen Size | 1.04 Inches |
| Shape | Rectangular |
| Special Feature | Activity Tracker, pedometer, sleep_monitor |
| Sport Type | Running, exercise_&_fitness, exercise_&_fitness, outdoor lifestyle, running, outdoor lifestyle |
| Style Name | Size S |
| Supported Application | Alarm, Pedometer, calorie_tracker, distance_tracking |
| Target Audience | Unisex Adults |
| UPC | 713524579838 745750683690 898628002649 810351020691 043396312937 810351024798 810351024606 810351020295 898628002663 656107328419 603470069609 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year parts and labor |
| Warranty Type | Standard/Full warranty |
| Water Resistance Depth | 10 Meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IPX4 |
| Wearable Computer Type | Activity Tracker |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |

## Product Details

- **Battery Capacity:** 330 Amp Hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** Fitbit
- **Connectivity Technology:** Bluetooth, USB
- **GPS:** No GPS
- **Operating System:** Android, Apple_iOS, Apple_iOS, Android, Windows, Windows
- **Screen Size:** 1.04 Inches
- **Shape:** Rectangular
- **Special Feature:** Activity Tracker, pedometer, sleep_monitor
- **Wireless Communication Standard:** Bluetooth

## Images

![Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large - Image 1](https://m.media-amazon.com/images/I/51N0Y6osPIL.jpg)
![Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large - Image 2](https://m.media-amazon.com/images/I/616PeicQKhL.jpg)
![Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large - Image 3](https://m.media-amazon.com/images/I/61WBQ16TK7L.jpg)
![Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large - Image 4](https://m.media-amazon.com/images/I/51MIld9nDYL.jpg)
![Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large - Image 5](https://m.media-amazon.com/images/I/81r0Fl0SWGL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Frequently Bought Together

- Fitbit Flex Wireless Activity + Sleep Wristband, Slate, Small/Large
- Fitbit Inspire 3 Health &-Fitness-Tracker with Stress Management, Workout Intensity, Sleep Tracking, 24/7 Heart Rate and more, Midnight Zen/Black One Size (S & L Bands Included)
- Fitbit Aria Air Smart Scale, Black

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**Shop now:** [https://www.desertcart.mx/products/257050-fitbit-flex-wireless-activity-sleep-wristband-black-small-large](https://www.desertcart.mx/products/257050-fitbit-flex-wireless-activity-sleep-wristband-black-small-large)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-07-14*