Use
Sports, Travel, PROFESSIONAL, motorcycle helmet
Active Noise-Cancellation
Yes
Place of Origin
Guangdong, China
Function
Motorcycle helmet headset, helmet wireless BT earphone headset
Li-ion Battery
3.7V/180mAh
Frequency
2.402GHz-2.480GHz
Range
20-30 meters (depending on device)
Transmission-distance of microphone
≤1m