Zewa's Bluetooth Activity Tracker is an exceptional connected health product. It uses Bluetooth BLE to sync information with Zewa's free Fit-Pro Mobile App. The App analyzes readings and displays charts and spreadsheets. The Activity Tracker features an LCD touchscreen that displays time, steps, calories, and distance. - Color Touchscreen Display, Size: 0.5" x 1" - All-Day Activity: Time, Steps, Distance, Calories spent. - Heart Rate: Continuous Heart Rate Measurement. - Sleep: Tracks Sleep. - Reminders: Program up to 5 alarms per day. - Waterproof Design. - Adjustable wrist band, Fits up to 9" Wrist. - Uses standard USB port for charging (charger not included unless specifically requested). - Bluetooth 4.0