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Seiko
Seiko's day-date automatic caliber and the in-house branded version of the NH36 with stricter quality control and finishing. The additional day wheel over the 4R35 adds the day-of-week complication without changing the movement dimensions. Found extensively in the Seiko 5 Sports and Prospex lines, it offers Seiko's proven reliability with the convenience of day-date display at a mainstream price point.
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5 Sports SKX series collection · 12 watches











4 colorways
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Seiko on the secondhand market
+10.1%
2026 so far · +5.2% to +17.0% · 103 matched watches
In line with the index
Year-by-year readings →Owners widely report the Seiko DressKX offers excellent value and a comfortable 22mm bracelet. Accuracy with the 4R36 movement is variable, with most owners experiencing +/-5 to 10 seconds per day, though the movement's official tolerance is +/-40 seconds per day. Some owners have noted component failures like bezel issues or misaligned parts, while others praise its accuracy. The Seiko DressKX is seen by some as a less serious tool watch than its predecessor due to the lack of a screw-down crown and ISO rating, though others prefer its modern features and warranty. Overall, owners rate the Seiko DressKX highly for its value and comfortable bracelet, despite variable accuracy.
On video
On real wrists · 12
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The matchups people make with the Seiko DressKX most: open one to see it side by side.