4.8" overall. Clip. Tailcap switch. Water resistant. SOS strobe. Strobe. Impact resistant. Modes: High (172 lumens, 2h 30m runtime), Low (218h runtime), Nite Lite, Signal. 138m beam distance. Tactical pack includes: lens holder/anti-roll device, color lens set (blue, green, red), and pocket clip. Lockout feature. Requires (3) AAA batteries (included). Aluminum construction. Color: Gray. Clam packed.