So small, you can keep it in your pocket or clip it to a cap for hands-free lighting. Ideal if you carry a lot of gear and don't want to be weighed down. Unbreakable lens. O-ring sealed. IPX4-rated for water-resistance. 1 meter impact-resistance tested. Removable pocket/hat clip. White LED delivers 45 lumens; 41m beam; runs 2.25 hours Fits in the palm of the hand or comfortably in a pocket Push button tail switch - momentary or constant on operation Includes removable pocket clip and high-strength lanyard Pocket clip also clips onto brim of hat for hands free use Length: 3.6 in. (91.5 mm) Body Diameter: 0.60 in. (15 mm) Weight: 1.10 oz. (31.2 grams) with battery