14 Mile EF-20A-1 Electronic Visual Distress Signal for Search and Rescue BATTERY OPERATED OVER 200 CANDELA BRILLIANT FULL HEMISPHERE PROJECTION UP TO 14 NM RANGE AT NIGHT, ONE MILE IN DAYLIGHT ANODIZED ALUMINUM CASE, TESTED WATERPROOF TO 50 FEET. USCG TESTED APPROVED DISTRESS SIGNAL FLASH RATE