Orions 25mm High Performance Red Aerial flares can be seen over 25 miles away. Reaching an altitude of 375 feet, these high-performance flares burn up to 33,000 candela and can be seen from 25 miles away. Replaces all Orion 25mm signals and are 50% brighter than 12-guage HP signals. Exceeding USCG requirements, Red Aerial flares are approved for day or night time use. Using aerial signals:Aerial flares should be fired after sighting or hearing a potential rescue vessel. To attract attention to your distress situation, the U.S. Coast Guard recommends that you fire two aerial flares--one immediately after the other--so rescuers can confirm the sighting and the direction of the signal. Avoid undue stress by stocking extra flares in your safety arsenal in case of emergency. Key Features Pack of 4 Reaches an altitude of 375 feet Can be seen from 25 miles away Burns 50% brighter than 12 gauge HP signals Specifications Signal Type: Red meteor flare Light Output: 33,000 candela Burn Time: 7 seconds Deployment Method: 25mm launcher Type Approval: USCG day/night Replacement Interval: 42 months from manufacture date