XCSOURCE&reg; Waterproof GPS GSM GPRS Vehicle Car Auto Tracker Tracking Device System GPS-303B MA080 Used widely for vehicles and other moving objects tracking Compact, elegant appearance, easy to hide, mini size design, and outdoor installation Built-in GSM, GPS antenna Support GPS and LBS (location based service) double tracking solution Support SMS / GPRS / Internet Network data transmission (GPRS/Internet instructions includes in CD in package