【SEIKO Cal.5106A】How the Calendar Works Inside of Your Wristwatch

Correcting the date/Push the crown Setting the watch time/Pull out the crown to position 2. NB/Please don't push the crown between 8 p.m. and 4 a.m.,Because, as you can see in the video, the date driving lever is meshing with the calendar disc and cause damages. #watchmovements#seiko#seikomatic