Comparing Seiko SKX Case Sizes - 42.5mm vs 38mm (SKX007 vs. SKX013) @Bespokeunit
Comparing Seiko SKX Case Sizes - 42.5mm vs 38mm (SKX007 vs. SKX013)  @Bespokeunit
Uploaded May 2022 | Updated September 2026, 3 weeks ago
In this video, Rafael highlights the major differences between the 42.5mm SKX (SKX007, SKX009, SKX013) and the 38mm SKX (SKX013).

PRICING
42.5mm SKX: ebay.us/ScWlIY
38mm SKX: ebay.us/r7UkZ9

Check Out The Written Review:
bespokeunit.com/articles/watches/seiko-skx-size-comparison-425mm-vs-38mm

Watches Homepage:
bespokeunit.com/watches

00:00 Introduction
In this video, we offer a look into the different case sizes encountered within the Seiko SKX model line.

00:39 Overview
The watches presented on screen (left to right) are:
SKX011
SKX009
SKX013
SKX007
SKX009
All of the models presented, except the SKX013, possess a 42.5mm case. The lug to lug measurement is 46mm. The height of the case is 14mm and the strap size is 22mm.

Comparatively, the 38mm SKX has a 38mm case diameter, 44mm lug-to-lug measurement, 13mm thick, and 20mm between the lugs (strap size).

03:33 42.5mm vs 38mm Cases Up-Close
Many aspects of both of the SKX dive watches are the same. Both have a day-date complication with a screw-down crown, diver's bezel, and 200m water resistance.

Both of these watches are also powered by the self-winding Seiko 7S26 movement. This movement has a 41-hour power reserve.

04:36 Strap/Bracelet
The SKX013 is most commonly encountered on the Seiko SKX Jubilee. On the other hand, the 42.5mm can be purchased on the rubber strap or Jubilee bracelet, though the bracelets are different from each other.

05:16 Case Design Differences
While slight, the SKX013 (38mm) does appear to have a different case design. Broadly speaking, the lugs appear sharper than on the 42.5mm SKX. The distal end of the lugs also have a different design, with the SKX013 having what appear to be sharper lugs.

06:54 Lume & Dial Comparison
All SKX models are equipped with Seiko LumiBrite lume that is green in color. All models are also equipped with a Seiko Hardlex crystal when they ship from the factory.

Questions or comments about these Seiko SKX watches? Let me know in the comments below!

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Comparing Seiko SKX Case Sizes - 42.5mm vs 38mm (SKX007 vs. SKX013)

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