500m motorcycle multi intercom bike to bike talking intercom

Specifications

 Motorcycle Helmet Intercom:The B (Bluetooth headset) I (intercom) M (music) offer real-time talking like a normal telephone. It can connect with two other riders or connect with anther rider and his/her pillion.
You like to ride together; wouldn't it be great to talk when you ride?!From now on, you can talk with your motorcyclist friends by way of this new two way wireless Bluetooth communication system, or you can chat with your pillion.Maybe receive a cell phone call without pressing a button, You can enjoy your favorite stereo music from your A2DP enabled cell phone or MP3 player or perhaps listen to the audio navigation message from your Bluetooth enabled GPS.
With this NewSuper-Range Bluetooth, you can do all these things even if you are riding or snow skiing!!!All this hands free functionality is contained within one self contained module that attaches to the side of your helmet.

Features:

Maximum talking range 500 meters between two riders, real two-way wireless communication. MAX support 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 cell phone/MP3/GPS)
Wind noise DSP cancellation
Water-resistance, all weather
Friendly for gloves
It can be used in:

The Maximum communication range over a high clear line of sight path can reach 500m/1640ft! (This maximum range is not guaranteed).Typical effective range in city is approximately 300m/950ft. Please note that actual range will depend on weather conditions, terrain, presence of obstacles. The working speed can be up to 120Km!

As a hands free Bluetooth headset for cell phone calls:

While out riding or snow skiing, the auto answer feature of the internal Bluetooth profile enables safe automatic Hands free answering of the phone call automatically. It also offers a call rejecting function.—receive the cell phone calls even you do not need to press any button, you just need to ride your bike as normal, the process of receiving call will be automatic, after ring on of the call about 5 seconds; it will receive the call automatically. It also can offer rejecting call function.

As a two way wireless full duplex interphone between riders or between rider & pillion:

Specifications:

Digital Signal Processor (DSP) Technology for wind noise cancellation
Excellent performance at speeds up to the legal limit with a full face helmet
Easily mounts to all full face and open face helmets
Up to 7 hours talk time when connected to your cell phone
UP to 7 hours time when listening to music
Typical current consumption is 55 ~75 mA
500 mAh Li Polymer battery
Standby time: 100 hours
Charging time:~ 3 hours
Chip brand: CSR
All weather, rain and snow resistance
Removable headset unit from the helmet
Power adapter: AC input 110V-220V / DC outp