Features:V5.0+AGHSP BT version, available for most of devices with BT function.Elastic knitted material, soft and stylish design.Allows you to keep your music where it belongs - in your ears.You will look great and keep fresh while listening to your favorite music. Keep the sound track to your life playing all the time.Perfect for outdoor activities and a special gift for your family.Specifications:Material: TapestriesBT version: 5.0BT protocol: AGHSPBT transmission distance: 10mHeadphone channel: Stereo (2.0)Music playback time: maximum sound 7H, medium volume 10 hoursMicrophone distance: 1mBT standby time: 72HCell capacity: 150mahCell po wer: 0.55WSpeaker impedance: 32 OhmSpeaker po wer: 0.02WFrequency range: 2.4-2.4835GHzSensitivity: 45dbTransmit power: 6dBAudio Output Distortion: 0.6%Audio output signal-to-noise ratio: 93dBCharging time:1-2 hoursMaximum input voltage:DC 5VMax input current:150mahMaximum input power:0.55WColor: Black, gray (optional)Item weight: 80gPackage List:1 * BT hair band1 * USB cable1 * User manual