Smart Fashion TW64 Sports Wrist Band Bracelet Smartwatch Waterproof Bluetooth For Android IOS Monitor Your Sleep: TW64 smart health watch has ability to detect how long you sleep,through its health software,count up your time of deep sleep,light sleep.(smart fit watch)) Health Life Walking: TW64 smart watches android can record your step,distance and calorie,which can help you to set the target each time to form a good habit.(smart fitness watch)) Smart Reminder: TW64 smart bracelet watch has Sedentary reminder, In-call reminder,drinking reminder,wake up alarm etc. Multi-Functional: TW64 smart bluetooth watch has Step counts, distance measuring,call reminder, message reminder,remote camera,vibration alarm clock,clock,calorie consumption management,sleep management,event trigger,sedentary reminder,anti-lost. TW64 is made by TPU Polymer composite materials,containing features like light,high resistant and high damage resistance.