Apparently there are significant differences in quality. The first model that I had in hand, made alarming noises when turning the bezel. The bezel also read rotate a few millimeters opposite. The second Dugena (now from Amazon), however, is free of errors and has none of the above defects. The clock is processed quite massive and perfectly. It is beautifully packaged and is even with the list price of 99 an absolutely inexpensive clock. The readability of date and day is great. The weekday can be optionally set in German or English.