Life Light - U.S. Coast Guard approved, water-activated, LED Strobe Rescue Light Life Light is a state of the art, U.S. Coast Guard approved, water-activated, LED strobe rescue light. Life Light is totally sealed, maintenance free, no changing of batteriesever! It is ideal for life vests, life rafts, safety harnesses, survival suits and other recreational uses U.S. Coast Guard Approved - 300 Hours of Flashing Light Virtually Indestructible - Maintenance Free - Automatic Water Activation - 5 Year Life - Visible Over Two Miles - Floats U.S.C.G. Approval #161.012/98/0 Patent #: US 9,487,279 B1