All ok. Thanks
Came not in perfect condition, light bulb was not firmly attached. Potentional meter was turning around, was not fixed. Anyway we thought, ok, will try it anyway, maybe it's going to work. Although it wasn't perfect. After two hours of work by experienced jeweller, we had a blast, explosion, and this is how it looks right now. It`s broken, and not working. Not satisfied, very poor quality, would not recomend it to anyone.