DescriptionBased on GSM/GPRS network and GPS satellite positioning system， this product can locate and monitor the remote target through SMS(Short Message) or the Internet.Features:Supports GSM/SMS text messages or GPRS data communicationSMS location sends GPS information and a Google Maps linkSingle location or continuous interval location settingsQuad-Band mobile phone networks (850/900/1800/1900 MHz) so it work's worldwideSOS button to send out immediate location in an emergency situationSpeed alarmGeo-fencing to restrict movement within a defined radiusCompact design allows it to be easily hiddenNo additional service feesReady to use with any GSM mobile phone SIM cardLow battery warningIncludes an optional magnetic back cover to more mounting optionsDurable， impact resistant rubberized housing