The Sport Flare by Princeton Tec provides a safer, more dependable and environmentally friendly alternative to candle lanterns, gas lanterns and chemical light sticks. The Sport Flare's cone is easily removed (even underwater) to reveal a mini flashlight, perfect for emergencies. In the unlikely event that the light should fail, the special photo-luminescent flare cone will continue to glow. The sport flare is a remarkable light source that generates enough light output to light up an entire tent for hours on just 2 AA batteries. The Sport Flare is an excellent alternative to chemical light sticks, ensuring that you will be seen on those low visibility and dark night dives.