Side by side

Seiko King Seiko KSKvsSpinnaker Dumas GMT

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
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

14 of 29 specs differ
Diameter
King Seiko KSK38.6mm
Dumas GMT44mm
Power Reserve
King Seiko KSK45h
Dumas GMT40h
Water Resistance
King Seiko KSK50m
Dumas GMT300m
MSRP
King Seiko KSK$3,300
Dumas GMT$399

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
38.6mm
44mm
Thickness
10.7mm
15mm
Lug-to-Lug
45.8mm
48mm
Lug Width
19mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

3 specs
Crystal Shape
Box
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Blue

Movement

3 specs
Caliber
6L35
Seiko NH34A
Power Reserve
45h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$3,300
$399

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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.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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