Feature: 100% Brand new and High quality Quad band & built-in antenna Two way locating methods based on MBS and GPS Support web, SMS and Google map link, no need of platform registration It needs password to make and change any setup, protect your privacy It can detect and fix some problems by built-in monitor CPU Built-in turn on/off power, supports 7-30V input voltage, suitable for all cars Supports hidden and open installation Location inquiry by SMS or GPRS (TCP/IP) It can take power supply from car cigarette lighter or car storage battery LED indicators to show working status at any time It can accurately position even when the signal is weak Online real-time tracking, report location and emergency to internet and monitor NO. automatically. Specification: GSM Frequency : 850/900/1800/1900MHz GPRS Frequency: Class2,TCP/IP built-in GSM Module GPS Module: SIRF Star III/LP GPS Channels: 20 Tracking Sensitivety: -159dBM Acqusition Sensitivety: -144DBM Locating Time (Open sky) Hot Start : <2secs Warm Start: <15sec Cold Start : <38sec Antenna: Built-in GSM,GPS antenna with low noise and high gain Function Buttons : Power / SOS LED Indicator : Three LED indicator GPS-blue,GSM-green,Power-red Power Input : Car power supply:7~30v DC Package Included: 1* GPS Tracker 1* Power Cable Several Screws