Famar Activity Tracking Waterproof Smart Watch,Built-in Bluetooth and Fitness Tracker, Stainless Steel Watchcase and Leather Watchband, Compatible with iPhone and Android Smartphones-Silver Color Smart Activity Tracking and Smart Adjusting Time : Records steps, distance and calories burned.Free health mate app Famar for real-time coaching; you can adjust your time by smartphone app. Ultra-low Power Consumption: No need to charge your smart watch,one battery can be used for 6 to 8 months,3 batteries included. Swiss Quartz Movement smart watches with stainless steel watchcase,diamond-plating lens and Italian calf leather strap. Water resistant to 100 m (330 ft): In general, the smart watches suitable for short periods of recreational swimming, but not for long time diving or snorkeling. Compatible iOS and Android Smartphones: iPhone: 6s/6/6s plus/6 plus/5s/5c/5/4s; Samsung Galaxy S7 edge/S7/S6 edge/S6/S5,Note 5/Note Edge/Note 4/Note 3 ;Huawei:P9/P9 Plus/Mate 8/P8/P8 Max/G9/Mate S/G7 Plus/Nexus 6P;Xiaomi Max/Xiaomi 5/4S,Redmi 3/Redmi Note 3;Meizu Pro 6/Pro 5/MX 5/Meizu Metal 3/Note 3/Note 2; LG: G3/G4/G5/G Flex 2; Google: Nexus 4/5; Motorola: Moto G/Moto X Pure /Mote E;HTC:One E9/M7/M8/M9/A9/X9 Desire 610/626S/816/828.