Specifications: Support for 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 take power supply from car cigarette lighter or car storage battery. It can detect and fix some problems by built-in monitor CPU. It can accurately position even when the signal is weak. Two way locating methods based on MBS and GPS. Location inquiry by SMS or GPRS (TCP/IP). Type: GPS Tracker GSM Frequencies: 850/900/1800/1900MHz GPRS: Class 12 Operation Voltage: 9V- 24V DC Humidity: 20% - 80% GPS Sensitivity: -159dBm Acquisition Sensitivity: -144dBm Position Accuracy: 10m GSM/GPS Antenna: Built-in Design LED Indicator: GSM-green, GPS-blue, Power-red Data Transmit: TCP, SMS Non-movement Detection: Movement Alarm Based on Built-in 3D Motion Sensor Mileage Report: Track by Time/Distance Interval Size (L x W x H): 8.7cm x 4.3cm x 1.4cm/3.43" x 1.69" x 0.55" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x GPS Tracker 1 x Power Line 4 x Screws 1 x English User Manual