The upgraded Klarus XT11S is a 4th generation ultra-compact, lightweight, super-bright, rechargeable flashlight! Using a CREE XP-L HI V3 LED, the XT11S delivers an impressive maximum output of 1100 lumens with a maximum beam distance of 330 meters! Like all the other flashlights in the Klarus XT series, the XT11S has a dual tactical tail switch for easy and simple non-visual one-handed operation, but it also has a side switch making the XT11S designed to satisfy any user's requirements for an EDC flashlight. The side switch also incorporates a specially designed lock function to prevent accidental illumination.