The Sector 5 packs a powerful 550 lumen beam with the convenience of a pistol grip for momentary or constant illumination. Four C-cell batteries minimize bulk while providing 24 hours of burn time. The new trigger switch design is easy to use with gloved hands; access momentary on via a half-pull and constant on via full pull. The switch also locks out to prevent accidental illumination and battery drain while in transit or storage.