Specification: MTK2501, support IOS + Android system; 1.22: round screen, 240 x 240 resolution; Support Bluetooth V4.0; Material: Metal + ABS; Function: Sleep monitoring, pedometer, raising or shaking hands for light screen, compass, Bluetooth music play, hands-free call, Bluetooth dialing, remote camera, anti-lost, sedentary remind, message notification of QQ / WeChat / short message, second chronograph, calculator, alarm clock, missing call remind, anti-theft remind; USB port, 270mAh battery, 7 days standby time; Supporting language: English, French, Spanish, Polish, Portuguese, German, Indonesian, Turkish, Finnish, Russian, Arabic, Persian, Swedish, Thai.