I have PMd a couple of you in regards to this question but I thought it would be beneficial to get a wider sampling... I am looking into getting one of these soon and I stumbled on a thread where one of our members talks about his batteries dying all the time. I know that newer illuminated leupolds have an auto on off feature but I am having a hard time finding the battery info on this scope. I read that it has an off position between each level of brightness and thats all I could find. My Google fu is failing me.