2. 4ghz Digital All-in-one Helmet Wireless Headphone

1. Enjoy listen music and on cellular phone while driving motorcycle
2. Connect with any music device
3. Connect with any cellular phone
4. Intercom feature with driver and passenger
5. Safe driving while talking with friend
Specification:
RF Output Power: 0 dB
Frequency range: 2.45 to 2.479 GHz (DSSS)
Battery capacity:NiMh rechargable batteries with 500 mAh each (estimate 5 hours use time)
Distance range: 5 - 7 m
Frequency Audio response: 30 Hz to 22 KHz