Surpass A+ Smart Watches Bluetooth Watch for Iphone 4 4s 5 5s 5c 6 Plus Samsung Galaxy S5 S4 S3 Note 3 2 Htc One M8 M7 Sony Google Lg (Silver) Standby time: About 180 hours It can synchronize phone book in smartphone Self - timer can realize remote control pictures Sound recordings - can be used to record sounds Romote Vidoe - can use it to record precious images unwittingly