5.38" overall. Weapon mountable. Water resistant. Impact resistant. Strobe. Tailcap switch. Pack weight: 4.94 oz. CREE XPL LED. 1.26" head diameter. High (900 lumens, 1h 25m runtime), Low (90 lumens, 11h 25m runtime), and Momentary On. Memory retention. Includes a Pic Rail mount and remote on/off button with cord. Remote button includes hook and loop mounting straps and double stick tape. Crenulated head for self defense. Requires 2 CR123A batteries (included). Aluminum construction. Color: Black. Clam packed.