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.

Specifications:

Bluetooth Version: V3.0+EDR
Frequency: 2.4026GHz-2.480GHz
Transmission distance: 30ft or so
Transmission distance of MIC: ≤3 ft
Li-ion Battery:3.7V/120mA
Charging time:2.5 HRS
Standby time:60 Hrs
Continuous working time: about 5Hrs
Bluetooth name: Magic Hat
Size: Fits for head circumference 56-62cm
Speakers can be taken off so that you can wash the hat

About Bluetooth pairing:

1. Press "power" 5 seconds, While Red and Blue light slowly flashing in alternative
2. Try to seek the Bluetooth name of "Magic Hat" for pairing, set-in the password of "0000" if it's the first to pair the device.
3. the blue LED slowly flashing seems pairing successful