Wireless Rechargeable Bluetooth Smart Cap Headset Headphone Soft Warm Beanie Hat Speaker For Iphone Samsung Htc LG Smartphone(bluetooh hat Grey) 100% brand new and high quality V3.0 + EDR Bluetooth version, avaliable for most of devices with bluetooth function. Knitted material and handsfree speaker that protects the head from the cold winter The hat can be washed Set-in MIC, available for cell phone to transmit the speaking phone to your aduio devices directly so that the user can hands free answering phone viea the device Built-in Li-ion rechageable battery,charge via USB cable, long stand-by time Supply power display on iPhone Wireless Rechargeable Bluetooth Smart Cap Headset Headphone Soft Warm Beanie Hat Speaker For Iphone Samsung Htc LG Smartphone