... static,electromagnetism compatible,vibration endurable.Relevant accessories:GPS Main Device, GPS Antenna, GSM Antenna, Power Supply cable, Panic ... Button, Lock Vehicle relay, Monitor Mic.Device functions:Positioning(GPS, Target location):it can real time ... W×H (aluminium alloy crust)Weight:0.32kg(main device net weight)Communication mode:GSM/GPRS/CDMADigital signal transmission index ...