Product features Individual or fleet gps polling Worldwide use Supports gsm frequencies 850/900/1800/1900mhz High-sensitivity, latest technology and the most advanced gps chip Can accurately position even if with weak signal Can work effectively in limited space such as the remote and narrow places; Compact size, easy for hiding Low energy consumption Remote oil cutoff Fast signal capturing Supports two modes: text message polling and gprs trace tracking Alarm function Vibration alarm Package size 145*92*66mm