- 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.
- Speakers can be taken off so that you can wash the hat