Features:

Maximum talking range 1000 meters between two riders, realtwo-way wireless communication. MAX support Three riders byBluetooth 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

It can be used in:

The Maximum communication range over a high clear line ofsight path can reach 500m/1640ft! (This maximum range is notguaranteed).Typical effective range in city is approximately300m/950ft. Please note that actual range will depend on weatherconditions, terrain, presence of obstacles. The working speed canbe up to 120Km!

As a hands free Bluetooth headset for cell phonecalls:

While out riding or snow skiing, the auto answer feature ofthe internal Bluetooth profile enables safe automatic Hands freeanswering of the phone call automatically. It also offers a callrejecting function.-receive the cell phone calls even you do notneed to press any button, you just need to ride your bike asnormal, the process of receiving call will be automatic, after ringon of the call about 5 seconds; it will receive the callautomatically. It also can offer rejecting callfunction.

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

Specifications:

Digital Signal Processor (DSP) Technology for wind noisecancellation
Excellent performance at speeds up to the legal limit with afull face helmet
Easily mounts to all full face and open facehelmets
Up to 7 hours talk time when connected to your cellphone
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 output 5v

Note: Motorcycle Helmet Not include!

Package Contents

2 x BIM headset main part
2 x Clip for mounting the main unit
2 x Speakers & microphone & audio plug
2 x USB cable
2 x Adapter