Durable and compact - a mere 4 5/8 inches and 6.5 oz. Precision machined 1 piece aircraft-grade aluminum tube with an Anodized black matte finish. The Integral Picatinny/Weaver style mounting deck works on most all mounting systems. Tool free attachment with knurled nut and locking plate. Features an Adjustable focusable beam and comes complete with remote pressure switch and two 3-volt Lithium batteries.