... 4.Excessive speed alarm; 5.CDMA(option), GSM, GPRS GPS GRPS car trackerSpecification/parameter:Working voltage: 8-36V/DC (limit ... 4 HoursInside battery working time: 3-5 HoursFunctions:Positioning(GPS, Target location)Target trackingBlind area replenish reportEmergency alarm, ... move alarm(need ACC switch)Relevant accessories:GPS Main Device, GPS Antenna, GSM Antenna, TTS voice report device,Power ...