Fastfind will transmit a unique emergency message identifier through the Cospas/Sarsat satellite system which can pinpoint your location anywhere on the earth’s surface. In most cases, the emergency alert is first received within as little as 5 minutes. Fastfind has a secondary ‘homing’ transmitter which allows Search and Rescue teams to direction find or ‘home in ’ on it once they arrive on scene. Storage life of 5 years, and once activated will continue to transmit emergency alerts for a minimum of 24 hours. Also has a unique, built-in SOS flash feature to aid in night time rescues. No subscription fees required. Wt: 5.3 oz.