1000meters talking arrange wireless bluetooth helmet intercom for riders
specialized for ride spports

Maximum talking range 1000 meters between two riders, real two-way wireless communication between three riders by Bluetooth system
Up to 120Km working speed
Up to 7 hours talking time
Safe auto-receiving cell phone calls
Advanced A2DP & EDR Bluetooth profile
Stereo music/audio function (transmits from A2DP enabled cellphone/MP3/GPS)
Wind noise DSP cancellation
Water-resistance, all weather,
Friendly for gloves

This is bluetooth stereo headset!
This is also interphone (walkie talkie), widely use for motocycle helmets, bike users!
Full duplex calls allow you to speak and hear the other party speak
simultaneously
100 meter,500meter,1000 meter Bluetooth Interphone  bluetooth intercom bluetooth walkie talkie Specifications
For Motocycle helmet, bicycle helmet, etc.