... function; GPS Tracker is base on the GPS satellites and GSM(850/900/1800/1900MHz), and by message, internet or PDA, it can track and position ... vehicle, old, child, Pet, and managing personel,track covertly etc.Technical Specification:Dimension: 86 * 60 * 25 (mm) Weight/: 600g (with all accessories) Network: GPRS ...