Montre GPS Tracker Surveillance r&Atilde;&copy;seau GSM espion Suivi Inbuilt GPS Module / Internet positioning service center, used to receive and send positioning information GSM /GPRS modem supports Quad frequency bands, i.e. 850/900/1800/1900 MHz / High-sensitivity, new workmanship and the most advanced GPS chip Can work effectively in limited space such as urban canyon / Low energy consumption / Fast signal acquisition Supports single positioning and continuous tracking / Supports alarming and remote monitoring / Supports fast dial button May monitor without disturbing the tracked person and realizes real-time tracking / Can position the holder by call or SMS Supports the location information inquiry by SMS and Internet In emergency, press the SOS button to have an accurate positioning