... saving,8H Talk Time 2012 Green,White,Black 3 Color to Select in Ear Music K901 Bluetooth Headphone HeadsetFeartures: CE,ROHS ... °CNo working temperature:-20°C~60°CCharging temperature:0°C~45°CCharging time:2 hoursTalking time:6 hoursStandby time:120 hoursPacking ... and 4.0 minor 2012 Green,White,Black 3 Color to Select in Ear Music K901 Bluetooth Headphone Headset