I have collection of headlamps, if I could only keep one, this would be the one. Most practical well thought out head lamp I seen yet. Runs on two AAs, water tight, very comfortable, and durable. This one headlamp that never gets put away, use it camping, working on my computer, working on my old hunk of junk 4x4. Got a 2hr run time on max bright, the candle power this has. I suggest running rechargeable batteries in this one, especially if you plan to use the max power like a love to do. Heck even if I did not go camping I will still have this one. I hardly bother with my dewalt flashlights and mag lights any more. A note on the durability Ive had this lamp for a couple of years now, tanked a few hundred AAs, still works like new and still my favorite.