The hp14 torch uses a slightly larger casing that allows for the use of the worlds most common battery the aa and has the brightness professionals and serious users are looking for a quick cycle switch allows you to select between a high output setting of 339 lumens or a low output of 56 lumens allowing you to choose the right level for your application coasts pure beam focusing optic system with fingertip speed focus control provides superior beam consistency from spot to flood with no dark rin