500m BT interphone for motorcycle rider Key features: (1) Work as an interphone, Bluetooth Headset (2) Safe auto-receiving cell phone calls; (3) Support voice dial; (4) Stereo music/audio function (transmits from A2DP enabled cell phone, MP3, GPS); (5) With single Mic software echo cancellation and noise suppression technology; (6) Maximum talking range 500 meters between two riders, real two-way wireless communication (7) Up to 120Km working speed; (8) Water-resistance and gloves friendly (9) Up to 3 riders inter- communication. (10) Frequency: 2.4GHz (11) Talk Time: Up to 7 hours (12) Standby Time: Up to 500 hours We can describe this communications kit as B (Bluetooth headset) I (intercom) M (music) This BIM can either be used for riders or for pillion. This BIM can connect with four Bluetooth devices: a Bluetooth enabled cell phone, two BIM (two riders or one rider and one pillion), an audio source which with a built in or a external audio Bluetooth transmitter. This BIM is a multifunctional device for motorcyclists and skiers, it can be used: 1) As a handsfree 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. 2) As a two way wireless full duplex interphone between riders or between rider & pillion The Maximum communication range over a high clear line of sight path can reach 500m/1640ft! Typical effective range in city is approximately 300m/950ft. Please note that actual range will depend on weather conditions, terrain, presence of obstacles, i.e. a large vehicle, buildings non line of sight etc. It can connect with two other riders or connect with anther rider and his/her pillion. The rider can chose which person to talk with working speed can be up to 120Km! 3) As a wireless Bluetooth music receiver and speaker, this BIM has EDR and A2DP profile , with EDR and A2DP profile it can offer another important function--- listening to stereo music from A2DP enabled cellphone,MP3 or navigation audio information from GPS(this MP3 or GPS should has a built in audio Bluetooth transmitter) 4) If your MP3 or GPS did not have a built in audio Bluetooth transmitter, you only need to have an external audio Bluetooth transmitter to pair with them, then you also can enjoy this added functionality. 5) As the speakers of your MP3/GPS