2.5 Inch overall. Rechargeable. Water resistant. Impact resistant. Weapon mountable. Green laser. High Performance LED light. 800 max lumens. 140m max runtime. 130m beam distance. Magnetic charging cable. Dual switches. Includes: Picatinny rail mount adapter; (2) Socket cap screw; (2) Socket screw set; Allen wrench; Cone Point screw set; Oval point screw set. Color: Flat Dark Earth. Requires (1) Lithium battery (included). Aluminum construction. Boxed.