Description: Pt01 provides an easy way to track your targets and provides peace of mind by showing you with your mobile phone or pc the location of your targets via sms or gprs. Main feature: Operating by one key for easy of use Built-in high sensitivity sirf star iii chipset and gsm/gprs module High quality, low power consumption Portable, compact size Gsm /sms communication or tcp/udp. Works worldwide! 4-frequency gsm 850/900/1800/1900 mhz. Compact size, and smaller than one name card. Easy to hide Support single location and continuous tracking Two way voice communication, support quick dialing buttons for 2 preset phone numbers Support check location by sms and internet Monitors can track the person without interfering him, Live! real-time tracking! Sos button send out exact location for immediate rescue/action. Geo-fencing to restrict movement to a defined radius. No monthly service charges to be paid to the call center