I ordered for my small bookshop 10 pcs. This LED spots and now about 3 weeks per Day 9 hours of use. I'm very satisfied with the light, one can use well targeted. Here were broken by 10 pcs. Two. Now I again ordered 6 who were all ok, if in the next 4 weeks no defect occurs, please send me another 10, then the store is complete and the energy and cost savings is really enormous. If the continuous use is easily five stars !!!