short and sweet ... The mechanism is original of an egg timer, only the bell is out. Works well as expected, have kept it and am satisfied, despite the high price. But I also do not like to tinker but use ready-made solutions. On straight pad rotates itself a reflex, if you know how to use an egg timer. Some have written that this does not work ...? Eieruhren one turns to the end to raise it enough and then goes back to the desired time. This is of course too. Everything ok, a star deduction for high price I also knew before the purchase and that was indeed agree.
