The world's most compact EPIRB at just 7" x 3.9" x 3.5". Its small size allows it be easily retained within its quick release bracket or placed in an emergency grab bag or life raft. It comes pre-programmed for registration with the United States country code and must be registered to a vessel with a US MMSI number. The initial point of contact during an emergency situation is the US Search and Rescue. 10 year battery life. Waterproof. 66 channel GPS enabled. Strobe light. 48+ hour operational life. Includes lanyard.