The Fitbit Versa Smart Watch Bluetooth Fitness Tracker. Black version. Model: (FB504). One Size fits all, Small and Large size bands included.

Features:
- Track your all day activity, 24/7 heart rate, & sleep stages, all with a 4 plus day battery life (varies with use and other factors), charge time (0 to 100 percent): two hours. Slim, comfortable design with a lightweight, anodized aluminum watch body
- Use 15 plus exercise modes like run or swim (Fitbit versa is water resistant to 50 meters, we do not recommend wearing charge 3 in a hot tub or sauna.) To record workouts and connect to Smartphone GPS for more precise real time pace & distance
- Access your favorite apps for sports, weather & more and get called, calendar, text, and app alerts. Syncing range - up to 30 feet
- Get call, text, calendar and smartphone app notifications when your phone is nearby. Plus send quick replies on android only. Operating temperature 10 to 60 degrees celsius
- Automatically track select sports & workouts with smarttrack and use female health tracking in the fitbit app to log periods, symptoms and more
- Radio transceiver: Bluetooth 4.0. Compatible with iPhone, Android & Windows phones