Side by side

Hamilton Jazzmaster Slim AutovsSeiko King Seiko KS1969

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 Slim Auto

The Hamilton Jazzmaster Slim Auto is praised for its elegance, light weight, and impressive leather strap, offering a classy yet engaging aesthetic. Its thin 8mm profile, achieved partly by omitting a seconds hand and utilizing the ETA 2892 movement, contributes to its wearability. However, one owner notes the 44mm case size as being very large, and another finds it less appealing than vintage Hamilton models, though the black dial version is considered better looking. Overall, owners appreciate the Hamilton Jazzmaster Slim Auto for its slim profile and elegant design.

Seiko King Seiko KS1969

The King Seiko KS1969 is praised for its Grand Seiko-level finishing and a slim 9.9mm case, with one owner noting it is indistinguishable from new and includes original packaging. However, the $3,100-$3,200 price point is widely questioned, with some finding the looks pedestrian and the branding jarring. Accuracy from the 6L35 movement is noted as +15/-10 seconds per day, and some owners feel the new case shape, dial colors, and end links deviate from the classic KS aesthetic. On balance, owners and reviewers are divided on the King Seiko KS1969, with the high price and modern design choices being the primary points of contention.

From video reviewers

The slim case profile under 10mm and compact lug-to-lug dimensions provide a comfortable fit. The dial's modern appeal and the collection's homage to vintage pieces are highlighted. Reviewers did not reach a consensus on any weaknesses or points of disagreement.

At a glance

12 of 29 specs differ
Diameter
Jazzmaster Slim Auto40mm
King Seiko KS196939.4mm
Power Reserve
Jazzmaster Slim Auto50h
King Seiko KS196945h
Water Resistance
Jazzmaster Slim Auto30m
King Seiko KS196950m
MSRP
Jazzmaster Slim Auto$825
King Seiko KS1969$3,100

Full specifications

Case

5 specs
Diameter
40mm
39.4mm
Thickness
8.35mm
9.9mm
Lug-to-Lug
0mm
43.6mm
Lug Width
22mm
19mm
Water Resistance
30m
50m

Crystal & Dial

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

Movement

3 specs
Caliber
6L35
Power Reserve
50h
45h
Jewels
0
26

Pricing

1 specs
MSRP
$825
$3,100
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