Side by side

Hamilton Jazzmaster Gent QuartzvsSeiko 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.

Hamilton Jazzmaster Gent Quartz

Owners widely praise the Hamilton Jazzmaster Gent Quartz for its dressier, unique aesthetic, with specific admiration for the dark, iridescent dial and the machine-work on the minute markers. The 40mm size is considered suitable for smaller wrists, though lug-to-lug measurements are debated. Some owners find the open-heart dial busy and difficult to read due to silver lines resembling hands, and the skeleton version is also noted for excessive branding. The H-20-S movement in the skeleton model is thought to have a 42-hour power reserve. Overall, owners appreciate the Hamilton Jazzmaster Gent Quartz for its distinctive mid-century modern design and detailed finishing.

From video reviewers

The sunburst blue dial and quartz movement accuracy are defining strengths of this watch. Both reviewers affirm the quality materials and modern styling, though specific performance comparisons or durability concerns were not detailed by either reviewer.

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
Jazzmaster Gent Quartz40mm
King Seiko KSK38.6mm
Power Reserve
Jazzmaster Gent Quartz
King Seiko KSK45h
Water Resistance
Jazzmaster Gent Quartz50m
King Seiko KSK50m
MSRP
Jazzmaster Gent Quartz$745
King Seiko KSK$3,300

Full specifications

Case

4 specs
Diameter
40mm
38.6mm
Thickness
10.2mm
10.7mm
Lug-to-Lug
0mm
45.8mm
Lug Width
20mm
19mm

Crystal & Dial

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

Movement

4 specs
Caliber
F06.111
Seiko 6L35
Type
Quartz
Automatic
Power Reserve
0h
45h
Jewels
0
26

Pricing

1 specs
MSRP
$745
$3,300
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