So the stones shine very well and long. already have a screw with the same equipment since tens of years and is still burning reliable. only the battery had to be changed once. regarding the processing I give my speakers right, they can now and then want to. but everything is working properly, the slightly greenish gefärbeten stones look deceptively real, bought two more gray, but the view from very artificial. All in all I can not recommend this purchase - is a great value for money
