Detailed Product Description VT203 gps vehicle trackerBased on GSM/GPRS and GPS, you can locate and monitor any remote targets by SMS or GPRS.FeatureGet the target's latitude and longitude by SMS or GPRS, and check position on google earth/maps.Support GPRS data transmission.Support sending commands by computerRemote sending commands by GPRS server and SMSSupport two GSM Sim cards, the unit works ...