Features 1 V3 0 EDR bluetooth version available for most of devices with bluetooth function2 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 Support display receiver battery on foriPhone Specifications General SpecificationColorBlack White Blue Gray Wine redFabricWovenDimensions40 30cmTechnical ParametersMicrophoneYesWired ControlSupport Not supportbluetooth VersionV3 0 EDRTransmission Distance10MFrequency Response2 4026GHz 2 480GHzBattery Capacity3 7V 100mACharging Time2 0 hoursWorking timeabout 3 5 hoursStandby TimeUp to 60 hoursUser tips 1 The music bluetooth scarf is designed to be reused and it is washable Therefor the icon panel on the hat is not fixed to the buttons If you the icons do not match the control buttons please manually adjust them 2 The control panel is perfectly positioned if you see full indication light from the light window 3 Press the ON OFF button for 2 5seconds the device is open once BLUE LED slowly flash Press 2 5 seconds again device close 4 Due to different bluetooth module you may search one of the bluetooth name bluetooth Hat Call me on the bluetooth device list of your smart phone no password needed 5