100% brand new and high qualityV3.0+EDR Bluetooth version，available for most of devices with Bluetooth functionKnitted material，fashion and keep warm with answer the phone in winterThe hat can be washedSet-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 devicesSet-in li-ion chargeable battery， charge via USB cable，long stand-by timeSpecifications:Bluetooth：V3.0+EDRFrequency：2.402GHz-2.480GHzTransmission distance：10m or soTransmission distance of MIC:≤1mLi-ion battery：3.7V/100mACharging time：2HRsStand-by time:60Hrs or soContinuous working time：about 3.5HrsBluetooth name: headbandColor:Black，GrayHeadband diameter:20.10cm/7.91"(unstretched)Headband width:6.60cm/2.60"Headband thickness:0.60cm/0.24Charging cable length:81.20cm/31.97"Flexible headbandQuantity:1SetNote:please keep the device dryplease keep out the earphone before washingSize for manual measurement， there may be a 0 to 1 cm error， belongs to the normal phenomenon.And due to the difference between different monitors， the picture may not reflect the actual color of the item. Thank you!Package includes:1Pc x Bluetooth music headband1Pc × instruction manual1Pc x Charging cablehttp://contestimg.wish.com/api/image/rating?name=b426702c7b8911e68b9c065f903a9ac5.jpg&w=1000&h=1000&m=0&t=0