4.63 inch overall. Water resistant. Impact resistant. Strobe. Features: One switch for On-Off, dimming and mode selection functions. Battery polarity indicators for easy replacement in the dark. Unbreakable, gasket-sealed polycarbonate lens with scratch-resistant coating. Meets MIL-STD-810F, Method 512.4. Tethered tailcap to prevent loss; Articulating 185 rotating head. Requires (2) AA batteries (included). Polymer construction. Color: Coyote Brown. Boxed.