Orion 12 Gauge Red Aerial Boat Flares This product is subject to an additional 10 hazardous shipping fee and requires a signature at delivery These aerial flares are US Coast Guard approved as day or night signaling device. These marine flares are able to reach an altitude up to 500 making them perfect for distress signal. Each flare is able to burn up to 7 seconds with a brightness up to 16,000 candela. Aerial Flare Features Altitude up to 500 Brightness up to 16,000 candela Burn time up to 7 s