Because of low price, I have resorted this time instead of Osram Dot-Its to the luminaires offered here. I'm very satisfied. The surface of the silver plastic may be minimal noble at Osram, but really just a hint. Incidentally dieNoname lights are perfect. Unlike another reviewer writes, there was no difficulty when inserting the batteries and also the switch mechanism is at least as good as at Osram. The adhesive pad for mounting is already tuned and high quality 3M. The glue spots so great on the ceiling. Adhesive surface must, of course, previously (preferably with alcohol - window cleaner) to be cleaned. Dropped me yet none - because they are better than Osram, Osram adhesive holds namely not with me.
Overall very satisfied and then the super price - 5 stars !!