
Seiko
A Seiko (TMI) quartz caliber with a high-frequency stepping motor that drives a smooth four-beats-per-second sweeping seconds hand instead of a single tick. Battery-powered and accurate to about ±20 seconds per month, it gives quartz watches a mechanical-style sweep at low cost.
Navygraf collection · 12 watches











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The Yema Navygraf Marine Nationale 400th Anniversary Edition is a quartz watch, with a 39mm stainless steel case, 9.85mm thick, powered by the Seiko VH31 movement. Water resistance is rated to 200m, under a mineral crystal. Manufacturer MSRP is $590.
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