The Neptonics Push Button Dive Light is great for spearfishing! It shines bright in holes and is extremely effective at spotting lobsters at night on the reef. The wide angle beam really penetrates the holes that fish hide in. It makes those spooked grouper and snapper easy to spot. Made from solid aluminum, this dive light is compact and powerful. The lifetime LED bulb produces a bright white light. The design makes this light bombproof and waterproof to 328 feet. The compact 5 1/2-inch-long design allows for it to fit comfortably in the hand and turned on with your thumb. This dive light takes a rechargeable 18650 battery. Battery & charger included.