| Manufacturer | Citizen Watch Co. |
| Caliber Number | 2502, 2502M, M-2502 |
| Movement Type | Quartz, battery-powered |
| Jewel Count | No jewels (0) |
| Frequency | 32,768 Hz |
| Accuracy Rating | +/- 15 seconds/month |
| Battery Cell # | SR920SW / 371 (Citizen part # 280-31) |
| Battery Life | Up to 5 years |
| Hand Count | 3 |
| Functions | Central hours; central minutes; central seconds; day and date at 3:00 |
| Hacking Seconds? | Yes |
| Other Features | Low battery indicator (EOL) |
| Country of Manufacture | Made in Japan |
| Known Models | Citizen Promaster Divers (Ref: 2502-H23265, 2502-H23273, 2502-S046769), Citizen Independent (Ref: 2502-003089-01) (Add your watch to the comments below…) |
The Citizen caliber 2502 is a quartz watch movement with a day-date calendar, with zero jewels.
While the calibre number itself is 2502, the example above is signed “2502M”. Interestingly, when Citizen packages a brand replacement movement, the number is “M-2502”.
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Image submitted by J.Barakauskas
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