Brief: Size: 1.61x2.00x0.59inchs Weight: 40g Locate precisely, 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 or PDA conveniently.