Side by side

Grand Seiko SBGX355vsSeiko King Seiko KSK

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

What people say

Owners + reviewers, side by side

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

Grand Seiko SBGX355

The Grand Seiko SBGX355 is widely praised for its beautiful dial, excellent finishing, and perfect 37mm size. Owners report unparalleled accuracy from the 9F62 quartz movement, rated to within 10 seconds per year. The high-intensity titanium case and 100m water resistance are noted features. Some consider the SBGX355 a "baby Snowflake" and a more accessible alternative to other models. Overall, owners and reviewers rate the Grand Seiko SBGX355 highly for its iconic Snowflake dial and exceptional quartz accuracy in a wearable 37mm case.

From video reviewers

The titanium case finishing is a significant strength. The deployant clasp is noted as prone to rattle. Reviewers disagree on the ideal case size for everyday wear.

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.

At a glance

12 of 29 specs differ
Diameter
SBGX35537mm
King Seiko KSK38.6mm
Power Reserve
SBGX355
King Seiko KSK45h
Water Resistance
SBGX355100m
King Seiko KSK50m
MSRP
SBGX355$4,100
King Seiko KSK$3,300

Full specifications

Case

5 specs
Diameter
37mm
38.6mm
Thickness
10.6mm
10.7mm
Lug-to-Lug
44.6mm
45.8mm
Material
Titanium
Stainless Steel
Water Resistance
100m
50m

Crystal & Dial

2 specs
Crystal Shape
Box
AR Coating
Yes
Anti-reflective coating on inner surface

Movement

4 specs
Caliber
9F62
Seiko 6L35
Type
Quartz
Automatic
Power Reserve
0h
45h
Jewels
0
26

Pricing

1 specs
MSRP
$4,100
$3,300
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Grand Seiko SBGX355 vs Seiko King Seiko KSK gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.