Key takeaways
- Choose VK63 when running seconds and a traditional three-register dial matter.
- Choose VK64 when you prefer a cleaner two-register chronograph layout.
- Neither caliber is automatic; both combine quartz timing with a mechanical-style chronograph display.
Quick answer: Seiko VK63 and VK64 are Japanese meca-quartz chronograph movements. Both have a central 1/5-second chronograph hand, minute counter, 24-hour display, date, and an approximately three-year SR936SW battery rating. VK63 adds running small seconds; VK64 removes small seconds for a cleaner two-register layout.
VK63 vs VK64
| Feature | VK63 | VK64 |
|---|---|---|
| Chronograph | Central 1/5-second and minute counter | Central 1/5-second and minute counter |
| Other displays | 24-hour, small seconds, date | 24-hour, date |
| Layout | Three registers | Two registers |
| Size | 13 1/2 ligne; 5.10 mm | 13 1/2 ligne; 5.10 mm |
| Battery | SR936SW; about 3 years | SR936SW; about 3 years |
Which should you choose?
Choose VK63 for running small seconds and a traditional three-register dial. Choose VK64 for a cleaner two-register design. Contrary to a common online claim, VK64 does have a date; it removes small seconds, not the date.
Shop related WISHDOIT chronographs
WISHDOIT chronographs use several Seiko calibers. Check each product page for the exact movement:
- RACING GT40 - Seiko VK68 meca-quartz, from the related premium VK family.
- RACING GT 2.0 - Seiko VD56 quartz chronograph.
- RACING F-150 - Seiko VD57 quartz chronograph with date.
View all WISHDOIT chronograph watches
Frequently asked questions
Is VK63 automatic?
No. It is battery-powered meca-quartz.
Does VK64 have a date?
Yes. Official specifications list a date on both VK63 and VK64.
Does the central hand sweep?
While timing, it advances in 1/5-second increments. It is not the normal running seconds hand.
Source: Time Module VK specifications.
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Reviewed by the WISHDOIT Editorial Team. Technical claims are checked against available manufacturer documentation and watch-level specifications. Read our Editorial Policy. Last updated July 8, 2026.