Keyou Y3 3G Smart Watch  Phone wifi Bluetooth Heart rate monitor Android5.1 mtk6580 quad core 1.3 ghz 512 mb/4 gb smartwatch no 1 d6 1 63 inch 3g smartwatch phone android 5 1 mtk6580 quad core 1 3ghz 1gb ram gps wifi bluetooth 4 0 heart rate monitoring