Miyota Caliber 0S10 Watch Movement

Manufacturer	Miyota
Caliber Number	0S10
Type	Quartz
Replaces Caliber	Citizen 0510
Lignes	13.50”’
Diameter	30.8mm
Height	4.13mm thickness
Battery Cell Number	SR927W
Battery Life	5 years (estimated)
Frequency	32,768Hz
Quartz Type	Tuning fork type quartz crystal
Stem	065-453
Hand Sizes	120/80/18
Jewels	0
Functions	Hours, minutes, central chronograph seconds, small seconds at 6:00, 60 minutes subdial at 12:00, 12 hours subdial at 9:00, date at 3:00 (but also possible at 4:00, between 4:00 and 5:00, and 6:00)
Country of Manufacture	Japan
Known Models	Skagen, Invicta (add yours in the comments below…)

Miyota caliber OS10 is a quartz chronograph watch movement with zero jewels. It is made in Japan.

High Hand Versions

The caliber 0S10 has two high hand versions: 0S1A and 0S1F.

Calendar Locations

The base 0S10 movement has the date window at 3:00. This movement is also available with the date at 4:00, between 4:00 and 5:00, as well as at 6:00. Black and white background date wheel versions are available.

Accuracy Rating

Miyota states the accuracy of the caliber 0s10 quartz movement to be +/-20 seconds/month.

Chronograph

The 0S10 chronograph seconds has a quick reset to zero. Miyota calls this the Heart Cam Reset System.

How to Reset to Zero?

If your 0S10 chronograph hands need calibrated back to zero after a battery change, follow the steps below:

Pull the crown to position III (time setting position)
Press pusher A (the top button) to advance the chronograph hand forward. Long pressing will advance the hand rapidly.
When the hand is at zero or 12:00, push the crown back in.