Love the modern style and beautiful finish. Title Fitness Tracker Watch - Waterproof Heart Rate Sleep Monitor Step Counter Activity Tracker Smart Bracelet Bluetooth Pedometer Style Waterproof Feature Heart Rate Monitor Function Sleep Monitor, Step Counter, Message Reminder, Call Reminder, Sedentary Reminder Compatibility Bluetooth Material Silicone Wristband, ABS Plastic Case Screen Type OLED Screen Resolution 128x64 Battery 90mAh Lithium Polymer Battery Charging Time 1-2 hours Standby Time about 7-10 days Impressed with the amazing features and comfort. Love the modern style and beautiful finish. Title Fitness Tracker Watch - Waterproof Heart Rate Sleep Monitor Step Counter Activity Tracker Smart Bracelet Bluetooth Pedometer Style Waterproof Feature Heart Rate Monitor Function Sleep Monitor, Step Counter, Message Reminder, Call Reminder, Sedentary Reminder Compatibility Bluetooth Material Silicone Wristband, ABS Plastic Case Screen Type OLED Screen Resolution 128x64 Battery 90mAh Lithium Polymer Battery Charging Time 1-2 hours Standby Time about 7-10 days Impressed with the amazing features and comfort.