We are a professional electronic digital consumables manufacture with high reputation in shenzhen China, offering MP3 player, MP4 player, bluetooth earphone and GPS, etc. Description of Bluetooth GPS Receiver (SM-BRT-303) The best GPS(Bluetooth) This Bluetooth GPS is designed for many applications such as human and assets security, the specific target to be tracked, emergency call, the management for specific purpose. Features: 1) Acquisition:32 channels parallel 2)Enhanced alogorithm provide superior navigation performnce in urban, canyon and foliage environment. 3) Capable of operating indoors and tracking signals down to -157dBm (-187dBW) 4) 13-15 hours operating on full charged battery 5) Easy place, easy use Sensitivity To157dBm Tracking, Superior Urban Canyon Performance Interface Communication Protocol:Communicate with host platform Via Bluetooth (class 2) serial port profile] Device Size and Weight 81.0 (L) X 43.0 (W) X 17.6 (H) mm 3.19 (L) X 1.69 (W) X 0.69 (H) inch 70g (battery included) Power Built-in rechargeable 1000mAh Li-ion battery and 5V DC input Operation Current:<80mA (Typical) Operation Time:12hrs, fully charged, in continuous mode Charging time: 3.0hrs.(Typical) Accessories Car charger (12V in, 5V output) AC adaptor (5.3V output, 500mA)