When all other means of personal rescue have failed, the ACR Terrafix 406 GPS 1 Personal Locater Beacon gives you a last resort option for backcountry rescue. The Terrafix 406 GPS 1 PLB transmits a distress signal that is detected by the 406 MHz COSPAS-SARSAT system. The 5-watt distress signal operates at a frequency of 406 MHz, which transmitsa unique ID that lets rescuers know who and where you are. The Terrafix 406 GPS 1 PLBs signal gives rescuers incredibly accurate information on your locationwithin 110 feet, and the signal can be routed to the nearest response agency in as little as three minutes. This little life-saver floats, and the protective holster attaches onto your backpack or PFD. The Terrafix 406 can be registered online and requires no subscription fees. Available for US shipment only.