Regulating a Mechanical Wrist Chronometer Movement

https://calibercorner.com/seiko-caliber-nh35a/

The attached YouTube link explains the regulation of a mechanical watch movement very well. The movement shown in the video is a NH 35A made by Seiko and has the potential to be accurate enough for celestial navigation when a daily rate correction is applied. https://www.youtube.com/watch?v=vz_1rhl1lvY&list=LL&index=6&t=124s