Using two alkaline batteries, the ProTac 2AA is a versatile personal carry light the size of a marker that now produces 250 lm of bright light. Features: 10-tap programming - (1) high/strobe/low (2) high only (3) low/high High for bright light, low for longer run time, strobe for signaling or disorienting Includes (2) AA alkaline batteries and nylon holster IPX7 waterproof to 1 m for 30 min, 2 m impact resistance tested Solid State power regulation provides maximum light output throughout battery life Rubber push-button tail switch Durable, anodized aluminum construction with impact-resistant tempered glass lens Unbreakable pocket clip O-ring sealed RoHS compliant