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1. Unlimited multiple users in a group can talk to each other( all the people can listen and talk with press any intercom button), Real handfree!
 
2. The Maximum communication distance is 2000 meters, the working speed is higher than 120 kilometers.
 
3. Novel bone conduction earphone devise (the newest bone conduction technology breaks through the effect of high decibel environment noise to provide clearer communication quality)
 
4. Receive mobile phone calls automatically and safely
 
5. There is two channel frequency for intercom (if the user don't want to talk or listen or want to talk to only one or other group, they can chose the other channel frequency)
 
6. No limited to use on helmet, use a pair earphone hook to use on many area, such as firefighting, dining rooms, traffic police, ect.
 
7. Advanced A2DP& EDR bluetooth function
 
8 the conversation time is longer than 8 hours