Side by side

Hamilton Jazzmaster Viewmatic AutovsGrand Seiko SBGR321

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

Jazzmaster Viewmatic Auto
HamiltonJazzmaster Viewmatic Auto
MSRP $995
SBGR321
Grand SeikoSBGR321
MSRP $5,200

At a glance

7 of 29 specs differ
Diameter
Jazzmaster Viewmatic Auto40mm
SBGR32140mm
Power Reserve
Jazzmaster Viewmatic Auto80h
SBGR32172h
Water Resistance
Jazzmaster Viewmatic Auto50m
SBGR321100m
MSRP
Jazzmaster Viewmatic Auto$995
SBGR321$5,200

Full specifications

Case

3 specs
Thickness
10.8mm
13mm
Lug-to-Lug
46mm
46.6mm
Water Resistance
50m
100m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
H-10
9S65
Power Reserve
80h
72h

Pricing

1 specs
MSRP
$995
$5,200

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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.

Hamilton Jazzmaster Viewmatic Auto

Owners widely praise the Hamilton Jazzmaster Viewmatic Auto for its classic yet modern aesthetic, comfortable 37mm size suitable for smaller wrists, and superb case finishing for the price. The textured silver dial and subtle blue hands are noted as appealing details, and the watch is seen as versatile for both casual and formal wear. Accuracy is reported as impressive, with some owners observing deviations of only 1-2 seconds per day. One owner noted a discrepancy in the stated case thickness, with Hamilton listing 10.10mm. On balance, owners rate the Hamilton Jazzmaster Viewmatic Auto highly for its excellent value and versatile, classic design.

Grand Seiko SBGR321

Grand Seiko SBGR321 owners and reviewers widely praise its attractive design, compelling dimensions, and robust movement. The watch features sharp case lines with contrasting brushing and polishing, a 40mm steel case that provides presence without bulk, and 100m water resistance. Its sunburst blue dial, inspired by the dawn sky over Mount Iwate, showcases Grand Seiko's signature finishing on applied markers and hands, with a red-tipped seconds hand. The 9S65 automatic movement is noted for its precision, running within specifications, with one source reporting a +5 to -3 seconds a day rate and a 3-day power reserve. A blue rotor with a crimson rim, also inspired by Mount Iwate, is visible through the display caseback. On balance, owners and reviewers rate the Grand Seiko SBGR321 highly for its exceptional finishing and compelling blue dial design at its price point.

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