Features white LED with high and low modes; Unbreakable, gasket-sealed polycarbonate lens with scratch-resistant coating; Integrated red slide filter easily accessible without loss of filter; Multi-function push-button switch; High-impact, super-tough polymer body offers exceptional durability; Uses two "AA" alkaline batteries (included); also accepts two "AA" lithium batteries for extended operation in extreme temperatures; Tactile battery polarity indication on body facilitates battery replacement in the dark; Durable belt/clothing clip with integral helmet mount features; Cord attachment holes provided in battery compartment cover capable of supporting 25 lb (11 kg) of load; IPX7; waterproof to 1m for 30 minutes