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Seiko 5 Sports SRPD85K1
$320Sold out
Case
- Diameter
- 42mm
- Thickness
- 13.4mm
- Lug-to-lug
- 46mm
- Lug width
- 22mm
- Material
- Stainless Steel
- Water resistance
- 100m
Crystal & dial
- Crystal
- Hardlex
- Lume
- LumiBrite
Movement
- Caliber
- Seiko 4R36
- Type
- Automatic
- Power reserve
- 41h
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.
The market
Market prices.
Retail$320
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Retail stock & market context
Seiko on the secondhand market
+8.1%
2026 so far · +3.6% to +12.7% · 80 matched watches
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In a nutshell
The Seiko 5 Sports SRPD85K1 is an automatic watch, with a 42mm stainless steel case, 13.4mm thick, powered by the Seiko 4R36 movement and a 41-hour power reserve. Water resistance is rated to 100m, under a hardlex crystal. Manufacturer MSRP is $320.
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