Streamlight MicroStream Miniature LED Pocket Light C4 LED technology gives this compact pen light an extremely bright, clear beam. Anodized aircraft aluminum case is shock- and corrosion-resistant. All openings have O-ring seals for water resistance. Features: Case Material: Type II MIL-SPEC abrasion and corrosion-resistant anodized aircraft aluminum Dims/Weight: Length: 3.5 inches (90 mm) Diameter: 0.6 inches (15 mm) 1.04 oz. (29.7 grams) with battery Light Source: C4® LED technology, impervious to shock with a 30,000 hour lifetime Output/Run time: 45 lumens; 420 candela; 41m beam; runs 2.25 hours On/Off: Push-button tail switch Battery: 1 AAA alkaline battery (included) IPX4 rated for water resistant operation. All openings o-ring sealed 1 meter impact resistance tested Removable pocket/hat clip Approvals**: Most models meet applicable European Community Directives Warranty: Streamlight warrants this product to be free of defects for a lifetime of use except for batteries and bulbs, abuse and normal wear. We will repair, replace or refund the purchase price of this product should we determine it to be defective. This limited lifetime warranty also excludes rechargeable batteries, chargers, switches and electronics which have a 2 year warranty with proof of purchase. THIS IS THE ONLY WARRANTY, EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARE EXPRESSLY DISCLAIMED EXCEPT WHERE SUCH LIMITATION IS PROHIBITED BY LAW. You may have other specific legal rights which vary by jurisdiction.