I had a good experience with Snap On Optics. I felt the battery was too sensitive to the touch but they tried to help me figure out what the problem was. Ray really has great customer service skills. He really worked with me and was understanding. I am using the product now and the light has made a world of difference. I've been practicing for 14 years and I feel like I've got new set of eyes. Love the light!!! I don't think I can go back to practicing dentistry without the snap on light.