Ano je to teoreticke. Sami to uvedli na svych strankach.
https://web.archive.org/web/20101009014248/http://www.grand-seiko.com:80/manufacture/9f-quartz.html
I tak si ale myslim, ze z praktickeho pohledu je to to nej, co v seiku delaji. Clovek si koupi spickove hodinky, celej zivot je nosi, neresi drahe servisy, baterku ti vymeni na pockani.