Specification: Size: 94 mm * 60 mm * 38 mm Weight: 300 g GSM/GPRS network Network band: 850/900/1800/1900 MHZ GSM/GPRS module: simcom340z or simcom300z GPS module: SIRF3 chip GPS sensitivity: - 159 DBM GPS precision: 5 m GPS start time: cold start (45 s)/hot start (1 s) Battery: 3.7 V polymer battery 6000 mah Charging time: 5 h Standby time: 1500 h (GSM sleep mode) Feature: Support map viewing on mobile phone screen, get absolute address by SMS, GPRS real time tracking on web based server. Built-in high sensitivity GPS and GSM antenna to make it can be used alone without installation, convenient and quick. Support for external GSM antenna, GPS antenna, and external power supply for the tracker to be installed on the device which can provide power for long-term using. Tracking function by timing and frequency Geo-fence: Set up a geo-fence for the unit to restrict its movements within a district. The unit will send the message to the authorized numbers when it breaches the district. Movement alert: you can set up barriers when the vehicle is stopped. Once moved, it can give an alarm to the authorized number. Over speed alarm: you can make the inspected target run according to fixed speed. It alarms when speed is exceeded. Low batttery alarm function Remote Engine-stop and Resume. Package Includes: 1 x GPS Tracker 104 1 x AC adapter 1 x Lighter car adapter (Car 12V OR 24V power) 1 x GPS Antenna 1 x GSM Antenna 1 x Relay 1 x Harness