Citizen Caliber 1015

Manufacturer	Citizen Watch Co.
Caliber Number	1015, 1015A, 1015B
Movement Type	Quartz, battery-powered
Lignes	6 3/4”’ x 8”’
Diameter	18.1mm x 16.1mm x 17.8mm
Height	2.71mm
Jewel Count	No jewels (0)
Frequency	32,768 Hz
Accuracy Rating	+/- 20 seconds/month
Battery Cell #	SR621SW / 364 (silver oxide, 1.55 V)
Battery Life	3 years
Stem Part #	065-505
Hand Count	2
Functions	Central hours; central minutes; date at 3:00
Hacking Seconds?	Yes
Country of Manufacture	Made in Japan
Known Models	Citizen Elegance Signature ladies watch (Add your watch to the comments below…)

The Citizen caliber 1015 (1015A, 1015B) is a 2-hander analog quartz movement with a date calendar. The trailing A or B represents movement evolution. The differences are unconfirmed, but they should be basically the same in most regards.

Similar Calibers:

This caliber has been discontinued, but appears to similar to a Miyota caliber 1L15 – which was also added to the discontinued products list and later replaced with the cal. GL15 with a cover over the coil. Therefore, when looking for a replacement or interchangeable movement for the Citizen 1015, it may be possible to use the Miyota 1L15 or GL15 (please note that this information is offered as a reasonable starting point, but it is technically unconfirmed – you do manage to perform a swap, please comment below).

This family of movements also has other versions:

• 1012A (Miyota 1L12, GL12) – Central seconds, date
• 1010A (Miyota 1L02, GL02) – Central seconds, day/date

Battery Replacement:

The movement hay have a number “280-34” engraved near the battery compartment. This is Citizen’s battery part number. It corresponds to an SR621SW or 364 type button battery.

Additional Resources:

• More “Citizen” mentions

Thanks to CC member “Timepiece” for the image.