Side by side

Seiko King Seiko KSKvsSeiko 5 Sports SKX series

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

King Seiko KSK
SeikoKing Seiko KSK
MSRP $3,300
5 Sports SKX series
Seiko5 Sports SKX series
MSRP $315

At a glance

14 of 29 specs differ
Diameter
King Seiko KSK38.6mm
5 Sports SKX series28mm
Power Reserve
King Seiko KSK45h
5 Sports SKX series40h
Water Resistance
King Seiko KSK50m
5 Sports SKX series100m
MSRP
King Seiko KSK$3,300
5 Sports SKX series$315

Full specifications

Case

6 specs
Category
Dress
Sport
Diameter
38.6mm
28mm
Thickness
10.7mm
11.2mm
Lug-to-Lug
45.8mm
33.1mm
Lug Width
19mm
14mm
Water Resistance
50m
100m

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Box
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
6L35
2R06
Power Reserve
45h
40h
Jewels
26
21

Pricing

1 specs
MSRP
$3,300
$315

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Seiko King Seiko KSK

Owners and reviewers widely praise the King Seiko KSK for its exceptional dial and case finishing, often compared to higher-end brands, and its slim, retro design. The use of the Calibre 6L35 movement in some variants is seen as a significant upgrade, contributing to a refined feel, while others note the bracelet is unusually nice and the case offers a mix of brushed and polished finishes with sharp angles. However, some owners question the value proposition, citing misaligned screws and clasp components on their examples, and the standard 6R movement in some models is criticized as a disappointment for the price point. Accuracy figures range from +15/-10 seconds per day to +5 to +7 seconds per day, and water resistance is rated at 5 BAR or 50 meters. Overall, owners and reviewers find the King Seiko KSK to be a beautiful and classy watch with fantastic finishing, though some are divided on its value and movement choice at its price point.

Seiko 5 Sports SKX series

Owners widely praise the Seiko 5 Sports SKX series for its iconic dive watch design, robust build, and excellent value, with many appreciating its timeless styling and tool-like character. The movement, while basic, is noted as offering hacking and hand-winding capabilities, and accuracy varies, with many owners reporting +/-5 to 10 seconds per day despite the movement's potential for +/-40 seconds. Some owners find the original SKX models heavier and bulkier than newer iterations, while others critique the lack of a screw-down crown and ISO rating on the newer Seiko 5 Sports SKX series, deeming it less of a serious tool watch. Overall, owners rate the Seiko 5 Sports SKX series highly for its enduring design and value proposition as a robust, everyday watch.

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