ACR GlobalFix iPro 406 28460 EPIRB Category I Rescue Beacon with Auto-Release Bracket, Built-in GPS, and LED Status Display Global fix I Pro 406 epirb Cat I automatic release Built-in GPS, LED status display. 5 yr. Non-hazmat Lithium Battery, self test. Housing with hydrostatic release included Built-in strobe, 121.5Mhz homing beacon, 6.3 watt transmitter,