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 housingApplication:Monitoring children and elderly to know their location at any given timeFleet ManagementTaxi DriversTow TrucksDelivery servicesVehicle & Personal Property theft trackingSOS Emergency Calling if you're stranded or in a dangerous situationAdded security and peace of mind on hiking or camping tripsPet Tracking & MonitoringContent Specs.Dim. 64mm x 46mm x 17mm(1.8” * 2.5” * 0.65”)Weight 50gNetwork GSM/GPRSNetwork Band 850/900/1800/1900MHzGPS chip SIRF3 chipGSM/GPRS module Simcom Sim340 or Simcom Sim300GPS Sensitivity -159dBmGPS Accuracy 5mFirst Boot Time Cold status 45sWarm status 35sHot status 1sCar charger 12―24V input5V outputPackage Contents:GPS Tracking Device x 1 Rechargeable Battery x 2Power Adapter for Charging x 1Battery Cover x 1 User Manual x 1Small Plastic Cover x 1