Mmuss Portable Rechargeable Washable Wireless Bluetooth Music Headband Hands-free Phone Call Answer Ears-free Headband with Built-in Speakders and Mic for Sports Excercise Traning (Black) Multi functionals headwear: rechargeble Li-ion battery, headband, bluetooth handset, handsfree microphone It is good for Sports, Running, Riding a Bike, or Skiing using this magic Headband, it would absorb the sweat; helps keep the sweat out of your eyes, also can be used as the hairlace to keep your hair away from your eyes during the sporting while you can enjoy your favorite music at the same time wirelessly. Make you look so Cool. It is the best gift for the people who likes sporting or the Music Buffs. Simply sync to any Bluetooth device and in seconds the wearer can enjoy hands-free connectivity, enabling them to make/receive calls and listen to music, wirelessly. Set-in MIC,available for cell phone to transmit the speaking phone to your audio devices directly so that the user can hand free answering phone up via the device. Hand-free Bluetooth Audio beanie headphone,the Hi-Tech beanie that allows you to listen to music wireless while protecting from cold. built in microphone to let you speak with your callings