Brand | Credor (Seiko Watch Corporation) |
Caliber Number | 7R31, 7R31A |
In-House? | Yes |
Movement Type | Spring Drive, manual-wind |
Diameter | Unconfirmed |
Height | Unconfirmed |
Jewel Count | 30 |
Frequency | 32,768 Hz |
Claimed Accuracy | Within 15 sec/month (1 sec/day) |
Power Reserve | 72 hours (3 days) |
Integrated Circuit | C-MOS-IC: Oscillator, Frequency Divider, Spring Drive Control Circuit |
Anti-Shock Device | Diashock |
Hand Count | 4 (3 on front, 1 on back) |
Functions | Central hours; central minutes; central sweeping seconds; power reserve indicator on the back |
Hacking Seconds? | Yes |
Country of Manufacture | Made in Japan |
Known Models | Credor Kuon (ref: GCLX997, GCLX999) (Add your watch to the comments below…) |
The Credor caliber 7R31 (7R31A) is a manual-wind Spring Drive movement found in Credor Kuon watches only available in the Japanese market.
Watches with this movement were introduced on September 29, 2023.
Credor 7R31 VS Grand Seiko 9R31:
The calibre 7R31 appears to be the Credor version of the Grand Seiko caliber 9R31. Both movements share the same specs and are both produced by Seiko. Cosmetically, differences can be seen in the finishing, branding (obviously), font, and the design around the power reserve indicator.
Editor’s Humble Opinion: There are cool design elements in both movements that would make for an awesome caliber if they were combined. See the quick artistic rendition concept movement below as an example:
Timepieces with this caliber:
Additional Resources:
Recent Comments
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It's 72 hours power reserve and 25,200 beats per hour.
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Mine has been running 0 seconds deviation for 3 weeks. Unbelievable.
Many Thanks most useful