A lighting tool for the 21st century, the elegant Stylus combines the convenience of an ultra-slim pen light with a high intensity LED which lasts 100,000 hours. Perfect for tactical use and covert operations, while preserving precious night vision, Stylus runs over 10 hours. It's waterproof, machined aluminum case comes in black, gold or silver and has a momentary blink switch plus constant . The 3-cell version measures 6.6 and weighs 1.1oz. Each Stylus is individually serialized, and features a pocket clip as well as a lifetime warranty. Carry Stylus anywhere. It's the dependable, comfortable lighting companion. Battery Three 3 AAAA alkaline batteries Bulb 100,000 hour lifetime, hi-intensity Light Emitting Diode LED , solid-state bulb . LED Navigation Green Body Black Material 6000 series tempered aircraft aluminum with anodized finish non-slip knurled grip. Weight with batteries 1.1 Ounces Dimensions .38 Dia. x 6.21 L Run Time Over 10 hours Power Navig Streamlight Stylus Stylus Black/Green LED