Product Name: Athlete sports Bluetooth headsetBluetooth version: V4.1Charging: Power adapter output (DC5V 150mAh)Battery indicator: a high-performance lithium polymer batteryBluetooth indicators: Class 2Support Agreement: Headset / handsfree / A2DP / AVRC / APT-Xtalk time: about 8 hoursPlaying time: about 8 hoursStandby time: about 180 hoursAudio Frequency Range:20Hz-20kHzBT radio frequency:2.400-2.481GHzOutput:16�� 3mWSensitivity:100-105dBpackage include:1 x bluetooth headset2 x Earbud1 x USB Cable1x user manual