This is a very rugged light. Built and engineered to a standard eveen the military or LE professionals would find strong. It throws its 200 lumens to good distance using it's TIR lens, (better than cheaper lights that have more lumens on paper that spill bright light in a wide, shorter beam) and you can run it on this high setting until the batteries run dry - as opposed to the recommended short runs on "Turbo" modes that oter lights have. The 15 lumens is plently bright for lighting up the inside of a house or a 3/4 acre back yard. low and high modes are selected based on how far you press down the button, meaning you can select either mode without having to cycle through other modes you don't want.
Overall a very well built, well thought out light, with a balance of brightness and runtime for the emitter it uses.