Power-on operation has been confirmed, and it was able to punch in without any problems at the time it was used. The recent operational check was only that, so please be aware of that when purchasing. It seems to be designed to automatically adjust the time. There were sales records on Amazon and other sites for 29,800 yen, so I will sell it at a lower price. It comes with one master key, and there are no disconnections in the power cord, etc., and it is in good condition.