I ve been told that the watch is supposed to work like this : the alarm rings when the hour hand reaches the alarm index. and during 30 to 60 minutes after that, the watch is still making some noise when you move it, meaning that the hammer is still free to move. this is supposed to end after when the hammer is automatically blocked during the next 12 hours (minus 30 to 60 minutes) and the watch doesn't make noise anymore.