12 Gauge Twin Star Red Aerial Flare: The Ultimate Signal for Marine Emergencies. With a burn time of 7 seconds, altitude of 250', and 15,000 candlepower, this flare ensures maximum visibility in critical situations. Each cartridge is equal to 1 type B signal, providing reliable and effective signaling when you need it most. Make sure you're prepared for any emergency with this 12 Gauge Twin Star Red Aerial Flare.