Yes. But, I have the Srt7, same UI, and it just doesn't work that way, sorry. You see, its very easy to know what level you want and to set it there before you turn it on. But, if the light is in your pocket, despite the reviews I've seen, the light will probably not be in the same position as was before it went in your pocket. After using the light for a few days, the ring does seem to "loosen" just a bit, and if I were you, I would check the ring position before clicking the light on if you need a certain level. The ring doesn't move all the time, but if its important to not ruin your night vision, or another reason for a certain level, just make sure where the ring is. It sounds weird, but very easy. I love my Srt7. And the 3 is the same just smaller. Hope that helps....But to answer your question, Yes you can, but may change ring position when in your pocket once in a while....