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Home/Browse/Seiko/5 Sports Midfield SRPJ85
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Seiko 5 Sports Midfield SRPJ85
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Seiko · 5 Sports

Seiko 5 Sports Midfield SRPJ85

Ref. SRPJ85K1 · Sport

$315Stock unknown

Case

Diameter
36.4mm
Thickness
12.5mm
Material
Stainless steel
Finish
Stainless steel
Water resistance
100m

Crystal & dial

Dial colour
Black

Movement

Caliber
Seiko 4R36
Type
Automatic

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.

Design language

Case shape
round
Dial style
matte
Bezel
none
Bracelet
fabric_nato

AI-detected from the product image

5 Sports collection · 4 watches

5 Sports SKX Sports Style Pepsi Limited Edition
5 Sports SKX Sports Style Pepsi Limited Edition38mm
5 Sports SRPJ89
5 Sports SRPJ8936.4mm
5 Sports SRPM19
5 Sports SRPM1942.5mm
Alternatives

Market

Retail$315

No forum listings recorded for this watch yet.

Retail stock & market context

Seiko on the secondhand market

+10.4%

2026 so far · +5.9% to +17.2% · 91 matched watches

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Community

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Summary

The Seiko 5 Sports Midfield SRPJ85 (ref. SRPJ85K1) is an automatic sport watch, with a 36.4mm stainless steel case, 12.5mm thick, powered by the Seiko 4R36 movement. Water resistance is rated to 100m. Manufacturer MSRP is $315.

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