Orion Signals 12 Gauge Aerial Flares Refill HP 4-packThese signal flares exceed U.S. coast guard requirements for added safety and reliability. When you are in an emergency situation you can not afford to deal with cheap or ineffective signaling devices.Orion Flare Details:500 foot altitude7 second burn time16,000 candelaRefill pack for the Flare GunEach flare weighs about 4 ounces and are effective in day as well as night time. These Orion aerial signals burn red and are guaranteed effective. Learn more about emergency signaling here. This product is recommended for: Boating, sailing, fishing, water sports, flying, aerial sports, camping, backpacking, travel and more.