Emits up to 375 lumens on max setting Two main lighting modes: Climbing and Route-Finding Ultra-thin front housing with extra articulation Perforated elastic headband is breathable and ligthweight IP67 waterproof and dust proof up to 1 meter underwater for 30 minutes Brightness memory allows light to turn on at chosen brightness without reverting to full power Specs Lumens:   375 Battery:   BD 1800 Battery