| Power Source | Electric Corded |
|---|---|
| Indoor/Outdoor | Indoor/Outdoor |
| Activity | Running, Fitness, Gym & Training, Pilates, Swimming, Walking, Yoga |
| Measurement System | Decimal & Imperial |
| MPN | FB401 |
| For Operating Systems | Android, iOS |
| Department | Unisex Adults |
| Measurement Provided | Calories, Distance |
| Battery Life | Up to 3 Days |
| Language | English, French, German, Italian, Spanish |
| Display Size | . |
| Manufacturer Warranty | No |
| Body Area | Wrist |
| Features | Sleep Tracker, Wireless |
| Sensors | Accelerometer |
| Sport/Activity | Running & Jogging |
| Item Width | . |
| Display Resolution | . |
| Color | Black |
| Material | Plastic |
| Mobile App | Yes |
| Brand | Fitbit |
| Type | Activity Tracker |
| Model | FB401 |
| Item Weight | . |
Check the listing for details. Fitbit Flex Wireless Activity & Sleep Tracker Module TESTED No Charger. Color: Black, Condition: Used. Listed at 9.99 USD. The Fitbit Flex Wireless Activity & Sleep Tracker Module is a sleek and versatile fitness technology device designed for indoor and outdoor activities. It allows users to track their activities such as gym workouts, walking, running, swimming, yoga, pilates, and more. The tracker is made of durable plastic material and can be worn on the wrist for up to 3 days on a single charge. It provides accurate measurements in both decimal and imperial units for calories and distance, and is compatible with iOS and Android operating systems. With a variety of colors and language options, this Fitbit model FB401 is a great choice for unisex adults looking to improve their fitness and track their progress.