Deuce LYFE Smart Watch / Activity Tracker 24/7 App - Daily Activity & Notifications - Compatible with Android and iOS. Bluetooth 4.0 Sports Mode - Track Time, Steps, Calories & Distance Sleep Monitor - Includes Silent Wake Up Alarm OLED Display - Readability In Full Sun. UV Sensor - UV Index With Sunburn Alert 7 Day Battery Life on a Single Charge. Lightweight - 22 Grams