They light up well. I purchased these for my pest control route. At times, I need small areas lit up while applying products. This is a great solution to keep my hands free to do other things than holding a small flashlight. It is definitely not powerful enough to do crawlspace inspections and I assumed that when purchasing. I use it to light up corners and cabinets at short distances. It does just what I expected it to do. The only complaint I have so far is the battery compartment seems to come off a little easier than I would have hoped. I hope the cover doesn't get misplaced...I may go ahead and tape it on so it doesn't get knocked off. For the price, I would recommend this for similar applications.