Drastically increase your probability of survival at sea with the multiple built-in redundancies of the GlobalFIX™ V4 marine distress EPIRB. Upon activation, the GlobalFIX™ V4’s robust internal GPS accurately fixes your exact location. Your coordinates are then broadcast via a powerful 406 MHz distress signal to Search and Rescue forces worldwide. In the absence of GPS data, orbiting Cospas-Sarsat satellites can accurately triangulate your position using the 406 MHz signal alone. A 121.5 MHz homing signal further guides searchers to your exact position.