A super bright powerful Krypton bulb provides extra long beam of bright light. Designed with a large handle opening to accommodate gloved hands. Can use a 6V lantern battery or an adapter to hold 4 D size batteries.Its waterproof body is impact resistant enough to withstand up to 5-foot drops. Beam Brightness: 4187 peak beam candlepower. Operates over 4 hours with a Rayovac 6V 944R heavy-duty lantern battery or 11 hours with 4 Rayovac alkaline D cells. EA