This headband headset is perfect for all fitness and sport activities. keep your hair out of your face, the sweat from dripping in your eyes, and enjoy your favorite tunes while you workout. the knit fabric is highly absorbent and also remains comfortable while maintaining technological bluetooth ability. get active today! features: a knitted material, sports music essential, set-in mic, available for a cell phone to transmit the speaking phone to your audio devices directly so that the user can use hand free answering, set-in li-ion chargeable battery charges via usb cable, long standby time. 4.1 bluetooth version, available for most of the devices with bluetooth, channel: stereo, material: knitted, color: grey, product size: 19.5 x 7.5cm, product weight: 67g, transmission distance: 10m or so, charging time: 2hrs, standby