... machines; Prevention against criminals.Key Features: SiRF StarIII GPS chipsets and GSM900/1800MHz module; Internal antennas; Compact ... terminal; TCP/UDP protocol; Internal li-ion battery.Specifications: GPS ChipsetSiRF StarIII or MTKGSM ModuleGSM 900/1800MHzGPRS ProtocolTCP/ ... 5.5V, 400mADimension78×48×20mmN.W.60g mini GPS tracker for pet, small, waterproof, long standby, sos, alarm, voice monitor