Side by side

Hamilton Jazzmaster Thinline AutovsGrand Seiko SBGM221

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

Jazzmaster Thinline Auto
HamiltonJazzmaster Thinline Auto
MSRP $1,145
SBGM221
Grand SeikoSBGM221
MSRP $5,400

At a glance

11 of 29 specs differ
Diameter
Jazzmaster Thinline Auto40mm
SBGM22139.5mm
Power Reserve
Jazzmaster Thinline Auto42h
SBGM22172h
Water Resistance
Jazzmaster Thinline Auto50m
SBGM22130m
MSRP
Jazzmaster Thinline Auto$1,145
SBGM221$5,400

Full specifications

Case

6 specs
Category
Dress
GMT
Diameter
40mm
39.5mm
Thickness
8.45mm
13.7mm
Lug-to-Lug
46mm
46.9mm
Lug Width
20mm
19mm
Water Resistance
50m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Beige
Black

Movement

2 specs
Caliber
2892-A2
9S66
Power Reserve
42h
72h

Pricing

1 specs
MSRP
$1,145
$5,400

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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 Thinline Auto

Owners widely praise the Hamilton Jazzmaster Thinline Auto for its gorgeous, stunning, and captivating dials, particularly the champagne and burgundy variants, and its thin, comfortable profile, often noted at around 7mm to 8.4mm, making it ideal for wearability under shirt cuffs. The ETA 2892 movement is considered a strong value, though some owners report the rotor can be noisy and the winding feel unrefined, while others find the small crown difficult to manipulate. The absence of a second hand is polarizing, with some appreciating the simplicity and ease of setting, while others miss its presence. Overall, owners rate the Hamilton Jazzmaster Thinline Auto highly for its attractive, thin design and dial beauty at its price point.

From video reviewers

The slim case profile and affordable price point are consistently praised. Reviewers noted the absence of a second hand.

Grand Seiko SBGM221

Grand Seiko SBGM221 is widely praised for its exceptional dial finish, highly polished hands and indices, and elegant design. Owners consistently highlight the stunning craftsmanship, with specific mention of the up to 11 hand-polished facets on its rectangular markers. The reliable 9S66 movement is noted for its 72-hour power reserve and true GMT functionality, tested beyond Chronometer specifications. Some enthusiasts desire a bidirectional 24-hour bezel, which the Grand Seiko SBGM221 lacks, and its 13.7mm thickness and 19mm lug width are noted as potential limitations. On balance, owners rate the Grand Seiko SBGM221 highly for its exquisite finishing and elegant, comfortable design.

From video reviewers

The SBGM221 is praised for its value within the Grand Seiko lineup. The lug width is cited as a weakness.

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