Streamlight MicroStream Pen Light Flashlight - This small light fits in the palm of your hand, but doesn't compromise on power. Put this light in your pocket or clip it to the brim of your hat and have light wherever you go. Features White LED delivers 45 lumens; 41m beam; runs 2.25 hours Ultra-compact - the 3.6 inch design fits in the palm of your hand or comfortably in your pocket Removable pocket clip also clips onto brim of hat for hands free use Durable, anodized aircraft aluminum construction with unbreakable, scratch-resistant polycarbonate lens Includes one "AAA" alkaline battery and high-strength "break away" safety lanyard. Push button tail switch - momentary or constant on operation IPX4 water-resistant