With Solid State Power Regulation this flashlight delivers maximum light output. C4 LED technology is impervious to shock and provides nearly 50,000 hours of life with 250 lumen intensity. Push-button tail cap for one-handed operation. Momentary or continuous modes. High-impact, ultratough nylon-polymer construction is extremely durable and waterproof. Polycarbonate lens is nearly unbreakable and casts an even beam of light. Two CR-123 lithium batteries (included) provide up to three hours of run time. Length: 5.9. Wt: 5.2 oz. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Flashlights.