Supports web, SMS, and map link, no platform registration required. Password is required to make and change settings, protecting your privacy. Built-in power on/off, supports 7-30V input voltage, suitable for all cars. It can draw power from the car's cigarette lighter or the car's battery. It can detect and fix some problems using the built-in monitor CPU. It can position accurately even when the signal is weak. Two-way localization methods based on MBS and GPS. Position query via SMS or GPRS (TCP/IP). Type: GPS Tracker GSM: 850/900/1800/1900MHz GPRS: Class2, TCP/IP built-in GSM MODULE GPS module: SIRF Star III/LP GPS channels: 20 Tracking sensitivity: -159dBm Acquisition sensitivity: -144dBm Quick start: Less than 2 seconds (Open) Warm start: Less than 15 seconds Cold start: Less than 38 seconds (Open) Function buttons: Power, SOS Power input: Car power supply: 7~30v DC Antenna: Built-in GSM, GPS low-noise high-gain antenna LED indicator: Three LED indicators GPS-blue, GSM-green, Power-red Features: Real-time online tracking, Hidden and open installation, LED indicators, Color: As shown Material: plastic Package contents: 1 x GPS Tracker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.