brandon.c
161
I think you may be significantly underestimating their production numbers
The reason I say this is based on visiting Grand Seiko Studio Shizukuishi in 2022 and counting the number of employees assembling watches and the trays on their desks meant to hold completed movements.
From my photos, there are at least 20 employees assembling watches and on their desks they have stacks of trays that each hold 10 movements.
There are a little over 240 working days in Japan if you exclude weekends and holidays (and because this is a factory, we probably should not exclude those days - but I am doing so in my math) so for 40,000 movements we are looking at around 166 movements in total per day. That would be fewer than one tray per employee per day, and in my photo there are stacks of the trays at each employees workstation.
I think the numbers could easily be 1000 mechanical movements per day.
(I am not posting my photos because I cannot remember if I agreed to not publicly share them, but you can find photos online from press tours. For example,
http://www.premium-j.jp/spotlight/20200728_12400/ although in my photos from 2022 it is a lot busier than from that article in 2020.)