9.75" overall. Strobe. Lanyard. Tailcap switch. Water resistant. Impact resistant. CREE XHP50 LED. Modes: Turbo (2930 lumens, 2.6h runtime); High (1817 lumens, 4.4h runtime); Medium (592 lumens, 8h runtime); Low (100 lumens, 65h runtime). 347m beam distance. Includes (2) O-rings. Requires (2) 18650 batteries (not included), or (4) CR123A batteries (not included). Aluminum construction. Color: Black. Clam packed.