1) Dimensions: 1.7 x 1.8 x 0.7" 2) Precisely locate indoors and outdoor 3) Able to prevent theft of vehicle, cargo and strongbox, and monitor and protect the old, child and pet 4) Covertly track It is a server-based service, more advanced technology than GPS. It positions and tracks various remote targets or objects in combination of the signals of CDMA(800/1,900MHz) base station and GPS satellite. Users can get the position information via message or internet. Advantages: 1) Locate precisely indoors and outdoors: locate easily and precisely in the place covered with CDMA signals, such as in car trunk, elevator, and basement, with the precision of outdoor 5 - 20m, indoor 50 - 200m 2) Slim, integratedly designed (built-in antenna and battery, 40g), hide and carry easily 3) Low consumption, with a long idle state of 20 to 180 days (depending on the working mode) 4) Covert warning, remote monitoring and surveillance 5) Search conveniently and automatically: search the targeted object via message and internet Applications: 1) Guard against theft of strongbox, vehicle and outdoor equipments, and track cargo 2) Monitor and protect child, old and disabled 3) Provide peace-of-mind for businessman 4) Manage the on-errand personnel 5) Track criminals secretly