If you'd like a single battery light that shares many of the Tactician's features along with that legendary Surefire quality, the EDCL1-T is the one for you. The tailcap switch is used to select between two modes (High 500 lumens - 1h runtime, Low 5 lumens - 45h runtime), and constant on for either mode is achieved by twisting the cap. The two way clip permits the light to be carried bezel up or down. 4.5" overall. Impact resistant. Water resistant. 220m beam distance. Knurled body and tailcap. Requires (1) CR123A battery (included). Aluminum construction. Color: Black. Made in the USA.