Jm Smart Bios GPS smartwatch with black bracelet Key features: User language English Call and message notifications WeChat, QQ, Whatsapp, Facebook, Twitter, reminder function Steps, heart rate, distance, weather, calories, blood pressure Body temperature measurement Timer / Timer Multi-sport functions Phone GPS connection VeryFitPro app Battery life: up to 20 days in sleep mode Specifications: Waterproof: IP67 Size: 240x19x11 mm Strap: black Display: 0.96" TFT-LCD Jm Smart Smart wristband with clocksa is 2-year importer's warranty on the smartwatch and wristband and a 1-year battery warranty on the battery.