The real problem of the clock is the very weak long-wave receiver for the time signal from the transmitter DCF77 in Mainflingen. Wherever hanging the clock, she rarely gets contact. Which is signaled by a located above the colon antenna and is a bad omen. Because often the synchronization succeeds only partially. Then, for example, agree all identifiable information, but not the (not shown) year. Now shows the clock crescent, but the moon does not know that and entscheided for New Moon. But who needs the moon phase as an important information and not as nice frills, annoyed. The limited number of moon phase segments leads to overall pretty rough, but still acceptable information. In a child's room, the clock, the understanding of the sequence of the phases of the moon (of course, not their origin) promote.
The manufacturer seems to have known the weak receiver, because there are in the instruction manual, some quite demanding information about setting the clock.
The clock is quite easy to set, so it may be useful to position the clock so that it never comes into contact to DCF77. The clock is running quite well and then can not be constantly adjusted.
Overall, the clock is still recommended. If you live in Mainflingen, the joy was to be at the clock even undimmed. There, works even the time change summer / winter, which may well fail due to the weak receiver also.