Dimensions: 2.54 x 1.42 x 1.3. Strobe. Water resistant. Impact resistant. CREE XP-G3 S3 LED. 76m beam distance. Constant-on (46 lumens, 50m runtime). Reverse polarity protection. Picatinny rail mount. Advanced temperature regulation. Ambidextrous activation. Requires (1) CR123A battery (included). Aluminum construction. Color: Black. Boxed with hanging tab.