Brief: Size: 1.61x2.00x0.59inchs Weight: 40g Locate precisely (mainly use for outdoors), guard against theft of the vehicle, monitor and protect the old, the child, the pet, the disabled and etc. For covert or fleet tracking. Detail: Tri-band ( GSM 900/1800/1900Mhz ) for worldwide coverage. Locate and track the targets via SMS message, internet conveniently. Advantage: 1. Locate conveniently: A position platform with a monthly fee not required. Free mapping for the entire world using google earth or other free websites.Locate the targets via SMS message, internet or PDA, reducing the cost of the operator and the users. And our products can be made to be compatible with a positioning platform as well. 2. Slim, Completely self-contained (built-in antenna and battery). 3. Low power consumption, long standby of 3-15 days (depend on the working mode). Standard function: 1. Support working without positioning platform. 2. Automatically locate, report real-time location & time & speed. Or report the position at a preset time interval. 3. Manually input the latitude & longitude for target's Geo-info. 4. Multi-alert output: low battery + location; emergency alter + location. 5. Report the last position info when entering a place without GPS signal, i.e. underground parking. 6. Monitor the sound/conversation live & real-time. 7. Signal indicator and battery indicator. 8. Start the power saving mode at idle time automatically. 9. Can make a call between the cell phone and the tracker. 10. Geo-fence: restrict the movements of target within a defined district and report an alert if violated. Optional function: 1. Motion sensor 2. Send an alert to the users automatically when being dismounted. 3. Can add a USB receiver to be connected with the PC, so as not to input the latitude & longitude by hand. 4. Cut off the power and electricity of the vehicle remotely. 5. Bluetooth navigation.