Built-in pocket clip and fit securely in a shirt pocket, purse or backpack. With 11 lumens, a 90 minute runtime and 147' (45 m) beam throw, it provides a bright white light that can cut through fog, smoke and dust and is submersible for 30 minutes at 3.3'(1 m). Constructed from Xenoy Polymer Resin, its twisting shroud turns it off and on and it is powered by 2 AAA batteries.