Side by side

Seiko King Seiko KSKvsSugess MoonPhase Master SU2108

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
MoonPhase Master SU2108
SugessMoonPhase Master SU2108
MSRP $549

At a glance

18 of 29 specs differ
Diameter
King Seiko KSK38.6mm
MoonPhase Master SU210840mm
Power Reserve
King Seiko KSK45h
MoonPhase Master SU210841h
Water Resistance
King Seiko KSK50m
MoonPhase Master SU21085m
MSRP
King Seiko KSK$3,300
MoonPhase Master SU2108$549

Full specifications

Case

9 specs
Category
Dress
Chronograph
Diameter
38.6mm
40mm
Thickness
10.7mm
11.5mm
Lug-to-Lug
45.8mm
46mm
Lug Width
19mm
20mm
Material
Stainless Steel
Stainless Steel/Gold
Finish
Brushed and polished
Polished
Water Resistance
50m
5m
Caseback
Solid
Display

Crystal & Dial

3 specs
Crystal Shape
Box
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
S438 White

Movement

5 specs
Caliber
6L35
Seagull ST21
Beat Rate
28,800 vph
4 vph
Power Reserve
45h
41h
Jewels
26
21
Complications
None
GMT, Moonphase, Date

Pricing

1 specs
MSRP
$3,300
$549

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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.

Sugess MoonPhase Master SU2108

Owners widely praise the Sugess MoonPhase Master SU2108 for its gorgeous, affordable dress watch aesthetic, intricate dial details, and elegant rose gold finish. Reviewers note a well-decorated Seagull ST2108 movement averaging +7 seconds daily, a lumed moonphase, applied Roman numerals, and a multi-textured dial. However, some owners find the 40mm diameter and 50mm lug-to-lug too large for smaller wrists, and the polished blue hands can make quick time-telling difficult. Criticisms also include a date hand that obscures numerals, a domed sapphire crystal lacking AR coating, and stiff stock straps. On balance, owners rate the Sugess MoonPhase Master SU2108 highly for its elegant design and value in the affordable dress watch segment.

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