BearsFire&reg; Bluetooth Beanie Knitted Bluetooth Music Magic Hat Winter Beanie Hat with Bluetooth Headphone Headset Earphone, Microphone, for Men Women Speaker Winter Outdoor Sport Best Gift (Pink) V3.0+EDR Bluetooth version,avallable for most of devices with Bluetooth function Knitted material,fashion and keep warm with answer the phone in winter. 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. Set-in Li-ion chargeable battery.charge via USB Cable,long stand-by time. Support power display on iPhone.