Bluetooth Version: V4.2+EDR

Frequency: 2.4026GHz-2.480GHz

Transmission distance: 30 ft or so

Transmission distance of MIC: ≤3 ft

Li-ion Battery:3.7V/180mA

Charging time:2.5 HRS

Standby time:about 5 days

Continuous working time: about 5-8 Hrs

Bluetooth name:Magic Hat

Size:Fits for head circumference 56-62cm

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