Had it only 3 years and used it only a handful of times. Have had it carefully in dry storage in its case in the garage. Yes, it worked at first, and was fun. But now the auto-leveler doesn't even keep level. (If I turn the unit clockwise or counter-clockwise on the wall, it tilts the red laser line along with me. Which means that there is absolutely no level. Nice.) Also, now one of the little bent spring contacts for one of the AA batteries has broken, so the battery won't even touch the contact. So without wedging a piece of conductive metal in there or paying to have it repaired, the unit is done. The little piece that broke off is jangling around inside the unit.I don't buy an expensive nice hardware tool just to have it break in more than one way in just 3 years.No more Black & Decker for me.