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Seiko 5 Sports SKX series
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Seiko DressKX

Sport

The Seiko 5 Sports SKX series is widely praised as a gateway mechanical watch offering exceptional value and iconic status, with owners appreciating its ruggedness, tool-like authenticity, and moddability. Many owners report the 4R36/NH36 movement achieves accuracy of +/-5 to 10 seconds per day, far exceeding its stated specifications, and the stock Jubilee bracelet is noted as surprisingly comfortable. Some owners find the Seiko 5 Sports SKX series bulky and less aesthetically pleasing than newer models, with others noting its specifications lag behind contemporary watches. The Seiko 5 Sports SKX series is considered a decent watch, especially when found under £200, but it's not the serious tool watch the original SKX was, lacking a screw-down crown, bezel pip, and ISO rating. Overall, owners rate the Seiko 5 Sports SKX series highly for its iconic dive watch lineage and excellent value at the price point.

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5KX
DressKX
4 Variants
Lume:LumiBrite on hands and index(es)
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Retail MSRP
$315
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Alternatives
Case
40mm
Power Reserve
41h
Movement
Automatic
Water Resistance
100m
Crystal
Hardlex
01

Case Dimensions

Diameter40mm
Thickness11.5mm
Lug-to-Lug44.6mm
Lug Width20mm
02

Case Build

MaterialStainless Steel
Water Resistance100m
03

Crystal & Dial

CrystalHardlex
LumeLumiBrite on hands and index(es)
04

Movement

Caliber
Seiko 4R36
TypeAutomatic
Beat Rate—
Power Reserve41 hours
Jewels24
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleMatte
BezelFixed
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026
In a nutshell

The Seiko DressKX is an automatic sport watch, with a 40mm stainless steel case, 11.5mm 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 $315.

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