| Power Source | Batteries |
|---|---|
| Size | Large & Small / One Size |
| Color | Black |
| Indoor/Outdoor | Indoor/Outdoor |
| Material | Aluminum |
| MPN | FB521BKGB-US |
| For Operating Systems | Android, iOS |
| Brand | Fitbit |
| Department | Unisex Adults |
| Type | Activity Tracker |
| Battery Life | Up to 2 Days |
| Measurement Provided | Calories, Distance, Heart Rate, Time |
| Language | English, French, German, Italian, Spanish |
| Model | Fitbit Sense 2 |
| Body Area | Hand, Wrist |
| Features | Alarm, Average Heart Rate, Bluetooth, Calorie Monitor, Clock, Data Review, Date, Distance Traveled, ECG Heart Rate, Exercise Log, Heart Rate Monitor, Stopwatch, Timer, Wireless, Wristband |
| Sensors | Accelerometer, SpO2 |
| Sport/Activity | Gym & Training, Running & Jogging, Yoga |
Check the listing for details. Fitbit Sense 2 Smartwatch FB521 Graphite · ECG SpO2 Sleep HR · Bundle + Charger. Color: Black, Condition: Used. Listed at 99.99 USD. ⌚ Fitbit Sense 2 Health & Fitness Smartwatch (FB521) – Graphite w/ Black Band + Bundle. Model: Fitbit Sense 2 (FB521). Stay on top of your health and fitness with the Fitbit Sense 2. Fitbit Sense 2 smartwatch (Graphite w/ Black band).
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