Can be seen up to 3 miles away in complete darkness * Far exceeds USCG requirements for light output/duration, (15 times longer and 6 times brighter than required) * Waterproof, weatherproof, impact resistant, faceted octagonal design is easy to grip in wet conditions * Light output 45 Lumens /5 candela (minimum requirement by USCG is .75 candela), operation time is 120 hrs (minimum requirement by USCG is 8 hours) * Manually activated only