4.5 overall. Clip. Impact resistant. Water resistant. Tailcap switch. LED with TIR lens. Modes: High (500 lumens, 1h runtime), Low (5 lumens, 45h runtime). 220m beam distance. Knurled body and tailcap. Two way clip permits light to be carried bezel up or down. Requires (1) CR123A battery (included). Aluminum construction. Color: Black. Clam packed.