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 Number	SR927W (395/399)
Battery Life	5 years (estimated)
Frequency	32,768Hz
Quartz Type	Tuning fork type quartz crystal
Stem	065-453
Hand Sizes	1.20mm / .80mm / .18mm
Jewels	0
Functions	Central hours, central minutes, central chronograph seconds, small seconds at 6:00, 60 minute chrono subdial at 12:00, 12 hours chrono 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	Locman Italy Sport Chronograph, Avio Milano Chronograph, Skagen, Invicta (add yours in the comments below…)

Miyota caliber 0S10 is a quartz chronograph watch movement with zero jewels. Miyota is owned by Citizen and this movement is made in Japan. The caliber number is often written incorrectly as OS1O or 0510. The Citizen branded version of this movement is 0510.

Some of the topics covered in this caliber listing:

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.

Replacement Price

Replacement prices for the Miyota caliber 0S10 movement were found in the range of $25.00 – $31.95 USD.

Macro Gallery

Examples of watches with this movement

The image below is of a Miyota 0S10 found in a Locman Italy Sport chronograph watch. There was no plastic movement holder and the pushers reached from the case to the movement.

Here is another example of a caliber 0S10 found in a Skagen watch. Also no movement holder needed and the case was designed so that the pushers can reach the movement buttons to operate the chronograph stopwatch feature.

Miyota 0S10 quartz movement in Skagen watch