Bluetooth GPS Receiver+Build in Lithium-ion battery x 1 General Working Frequency L1, 1575.42MHz C/A code 1.023 MHz chip rate Satellite Tracking Count 8 Antenna Build-in low noise, high gain active antenna. Sensitivity -143dBm Ultra high tracking/nevigation capability Acquiring Position Speed Cold Start <120 Sec, 50% Warm Start <32 Sec, 50% Hot Start <12 Sec, 50% Refresh Rate 0.1 Hz in average Acquiring Position Accurancy Position 5m CEP(50%), 7m CEP(95%), SA(Height) exclude Speed 0.1 m/sec, SA exclude Time Synchronize with GPS time, error<0.1 sec Coordinate System WGS-84(adjustable by order) Acquiring Position Range Altitude <18,000m Speed <515m/sec Acceleration <4G Jerk 20 m/sec Interface Wireless Protocol Host side bluetooth interface(Class 2)SPP protocol, range up to 10m(block free) GPS Protocol NMEA 0183(V3.0) GGA, GSA, GSV, RMC Update every 1 sec(Default) Power Build in rechargeable Lithium-ion battery, build in 5~15V charger circuit Working Current 33mA(Typical) Working Time Over 20 hours(Fully charged) Charge Time 2.5 Hours(Typical) Size LxWxH = 81x44x20 mm LxWxH = 3.2x1.7x0.8 inch Working Environment Working Temp -10癈 ~ +70癈 Related Humidity 5% ~ 95% un-compressed