BT-911 bluetoothV2.1 2.4GHz Stereo  Sports headphoneDescription:Fashion designAdjustable and comfortableBulit in microphoneCompatible with bluetooth devicesLets you listen to music or phone calls wirelesslyLong Talk timeSpecifications:Bluetoth version:V2.1+EDRFrequency: 2.4GHzOperatiing distance:10 metersTalk time:6 Hours or soStandby time:180 HoursMusic play time:6~8 HoursCharge time:2~3 HoursPackage:1X BT-911 bluetoothV2.1 2.4GHz Stereo  Sports headphone1X USB cable1X Audio cable