Dimensions: 3.75'' x 1.5'' x 1.5''. Water resistant. Impact resistant. LED. Remote pressure switch. Sharp focused beam for distance illumination. Glass filled nylon polymer toggle switch. 245m beam distance. Serialized. Includes Picatinny rail connector, alcohol pad, adhesive backed Velcro mounting strip, one set cross rail inserts, (4) cross rail mounting cap head screws, and Allen wrench. Requires (2) CR123A batteries (included). Aluminum construction. Color: Black. Boxed with hanging tab.