Its pretty nice. The low isn't quite low enough for me - about 20-ish lumens - but decent. Medium is quite useful. High is plenty bright. It works well in my C2-HA. I'm on a camping trip right now in Gettysburg PA so I get to play with my lights quite a bit. My other light is a stock new E1L. I really like that light. Compact and the low is actually PLENTY. Anyway, just thought I'd share. Take care all...