Brief: Size: 1.57x1.77x0.59inchs Weight: 40g Locate precisely (use for outdoors and indoors), 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: Based on CDMA base station (800 / 1900Mhz) and GPS satellites, it positions and tracks various remote targets, and reports the location by internet or SMS. Advantages: 1. High precision: Track and locate the targets in almost anywhere (such as in car trunk, elevator and basement and etc), with an accuracy of 5-20M outdoors, 50-200M indoors. 2. Slim, Completely self-contained (built-in antenna and battery). 3. Low consumption, a long standby of 3-180 days (depend on working mode). 4. Track and locate the target via SMS or internet easily. Standard function: 1. Automatically locate, report real-time location & time & speed. Or report the position at a preset time interval. 2. Multi-alert output: low battery + location; emergency alter + location. 3. Monitor the sound/conversation live & real-time. 4. Signal indicator and battery indicator. 5. Start the power saving mode at idle time automatically. 6. Can make a call between the cell phone and the tracker. 7. Geo-fence: restrict the movements of target within a defined district and report an alert if violated. Optional function: 1. Send an alert to the users automatically when being dismounted. 2. Cut off the power and electricity of the vehicle remotely.