NAVYA A1 Smart Watch with Camera, Memory Card and SIM Card Support and Fitness Tracker Smartwatch for Mens Boys and Girls(Black)Standalone Phone Watch: Smart watch connected Android phone via Bluetooth or with GSM 2G SIM Card can be used as a cellphone to make/answer calls, send/get message directly.Multifunctional Smartwatch: Sport health: Pedometer, Calories Calculation, Sedentar