Seiko · Japan
Seiko VK68
The VK68 (variant designation VK68A) is a premium meca-quartz chronograph produced by Time Module Inc. (TMI), the movement-making arm of Seiko Instruments in Japan. The spec sheet carries a revision date of December 2021, though the VK-series family has been part of TMI's catalogue for some years prior. The movement combines a standard quartz oscillator for timekeeping with an entirely mechanical module to operate the chronograph, giving the characteristic smooth-sweep chronograph seconds hand and the instant snap-back to zero on reset — qualities not achievable with a fully quartz chronograph.
Within TMI's own lineup the VK68 is a VK-series Premium Chronograph variant with a full tri-compax subdial layout: a central 1/5-second chronograph hand, a 60-minute counter, a running-seconds subdial, a 24-hour day/night indicator synchronized to the hour hand, and a quick-set date at roughly 4:30. Its nearest shelf competitors are the Ronda 5040.D and the ETA 251.262, both also meca-quartz chronographs of similar lignes size.
The movement carries zero jewels — explicitly engraved 'NO JEWELS' on the bridge — reflecting the industry-standard use of modern composite bearings in volume quartz production rather than traditional ruby jewels. Despite this, the meca-quartz architecture delivers a noticeably more satisfying pusher feel and hand motion than a fully electronic chronograph module.
Beyond Seiko's own SSB-series sports chronographs, the VK68 has been adopted by numerous independent and microbrand watch makers (Vostok-Europe, Boderry, and others) seeking a credibly mechanical-feeling chronograph at a manageable movement cost. Its 13½-ligne (Φ30.8 mm) footprint drops into most cases sized for the ETA 251.262 family, making it a practical choice for brands that switched movement suppliers.
In catalog
Technical specification
| Manufacturer | Seiko |
| Origin | Japan |
| Type | Meca-quartz |
| Diameter | 30.8 mm |
| Height | 5.1 mm |
| Hacking seconds | Yes |
| Hand-winding | No |
| Date | Yes |
| GMT | No |
| Chronograph | Yes |
| Accuracy (stated) | ±20 s/month |
1 model
Watches with this caliber
FAQ
Is the Seiko VK68 automatic or manual?
The Seiko VK68 is a meca-quartz movement: quartz timekeeping drives a mechanical chronograph module, pairing battery accuracy with a snappy, mechanical-feeling chronograph reset.
Does the Seiko VK68 hack (stop the seconds when you set it)?
Yes. Pulling the crown stops the seconds hand, so the Seiko VK68 can be set precisely to a reference time before you push the crown back in. Hacking is what lets you sync several watches — or a watch and a phone — to the exact second.
Does the Seiko VK68 have a date function?
Yes — the Seiko VK68 can drive a date display, though whether a given watch actually shows the date depends on the dial the maker chose, so check the individual model rather than the movement.
How accurate is the Seiko VK68?
The Seiko VK68 is rated at ±20 s/month. That is typical of a quartz-regulated movement — far tighter than a standard mechanical watch, so you would only correct it a few times a year. Real-world accuracy still depends on how each watch is regulated, worn, and serviced.
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