Miyota Caliber 1S13

Manufacturer	Miyota (Citizen)
Caliber Number	1S13
Type	Quartz
Similar Caliber	1S02
Diameter	11.50”’ (25.6mm)
Thickness	2.71mm
Battery Cell Number	364 (SR621SW)
Battery Life	Up to 3 years
Quartz Type	Tuning fork type quartz crystal
Stem	065-505 (tap 10)
Hand Sizes	1.20/.70/.17
Jewels	0
Hacking	Yes
Functions	Hours, minutes, seconds, date
Country of Manufacture	Japan
Known Models	TW Steel Slim Line

The Miyota caliber 1S13 is a quartz movement with 0 jewels.

1S13 vs 1S02

There is also a similar caliber 1S02. The difference is that the caliber 1S13 has a date at 3:00 and the 1S02 has a day/date at 3:00.

Accuracy Rating

Miyota’s official documentation claims the accuracy of the caliber 1S13 is +/-20 seconds/month.

Replacement Prices

At the time of this post the replacement price is in the range of $9.50 – $10.50. Buy the replacement here.

Watches with this movement

Additional Resources:

• Official spec sheet from Miyota
• Drawings and technical info