I'm waiting for Brownell's to get them back in stock so I can return one of mine. It has all the proper levels of brightness. When you turn it on it will go to sleep in about 4-5 minutes but won't wake up again. You have to manually turn it back on. Each time that you turn it back on it will change the level of brightness by one step. I tried new batteries, etc, no luck. I plan on exchanging it for a new one. For what they cost, I don't want a repaired unit. My other one works like a champ, very happy with it...