und`Quarzarmbanduhren alongside some other automatic, for work reasons. This is very solid, but ma be reckoned with relatively cheap automatic watches so that they are not optimally set up of home - my went a day before 25 seconds. Eventually I screwed her, now there are less than 5 seconds. I once had a Rolex Submariner that managed 3 seconds wow! If you as unscrewing a clock, one little concern must subsequently be taken that it is waterproof again - that goes by ma bathes the sealing ring in a silicon paste (you can get on Amazon), and then gently fits him again zuschraubt firmly. That's it. The setting, however, is quite a fumbling ... So be careful! Otherwise, great everyday Werzeuguhr, The slewing ring is to "Stop" better than a stop mechanism (I had never 10telsekunden, often but minutes "stop"). Even in the case of an electromagnetic pulse (ie nuclear war, which we indeed naeherkommen just back from humanistic reasons) will continue to run this clock, unlike all with quartz movements. Never say never;)