Specifications��Bluetooth Version: V3.0+EDRFrequency: 2.4026GHz-2.480GHzTransmission distance: 30ft or soLi-ion Battery:3.7V/120mACharging time:2.5 HRSStandby time:60 HrsContinuous working time: about 5HrsBluetooth name:Magic HatSize:Fits for head circumference 56-62cmPackage includes: 1 x Bluetooth Music Hat 1 x Charging Cable 1 x User ManualFeatures��1.100% brand new and high quality.2.Knitted material， fashion and keep warm with answer the phone in winter.3.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.4.Set-in Li-ion chargeable battery， charge via USB Cable， long stand-by time.5.Speakers can be taken off so that you can wash the hat