Build-in GPS personal locator. GSM/SMS communication or GPRS TCP/UDP connection. High sensitivity, New technology and latest GPS SiRF-Star III chipset! * Excellent for fixing the position even at a weak signal status. Works well even in areas with limited like urban canyons. Support single location and continuous tracking. * Support location triggered by tracker. Support location triggered by authorized cell phone. Support alarm and remote monitor. * 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! Locate the locator holder by the mobile phone via SMS. SOS button send out exact location for immediate rescue/action.