... /1900 MHZ.(Optional)¨ High sensitivity, new technology and latest GPS SiRF-Star III chipset!Excellent for fixing the position even at a weak ... /1800/1900Mhz (Optional)and GPRS TCP/UDPGPS Chipset latest GPS SiRF-Star III chipsetGPS Sensitivity -158DbGPS Frequency L1, 1575.42 MHzC/A Code ...