Side by side

Grand Seiko SBGM221vsGruppo Gamma Field III GMT

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

SBGM221
Grand SeikoSBGM221
MSRP $5,400
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

10 of 29 specs differ
Diameter
SBGM22139.5mm
Field III GMT40mm
Power Reserve
SBGM22172h
Field III GMT41h
Water Resistance
SBGM22130m
Field III GMT200m
MSRP
SBGM221$5,400
Field III GMT$459

Full specifications

Case

5 specs
Diameter
39.5mm
40mm
Thickness
13.7mm
14mm
Lug-to-Lug
46.9mm
48.5mm
Lug Width
19mm
22mm
Water Resistance
30m
200m

Crystal & Dial

1 specs
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
9S66
Seiko Instruments NH38A
Power Reserve
72h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$5,400
$459

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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.

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.

Gruppo Gamma Field III GMT

Owners praise the Gruppo Gamma Field III GMT for its look and value, with specific mentions of its sandwich dial and comfortable OEM straps. One owner notes incredible quality for the price across their Gruppo Gamma watches. The watch features a 40mm brushed stainless steel case, box sapphire crystal, and a Seiko NH34A movement with a 41-hour power reserve and stated accuracy of -20~+40 s/day. Some find the lack of a date window a drawback for a GMT, and question its differentiation from other NH34-powered watches. On balance, owners and reviewers find the Gruppo Gamma Field III GMT to be a good value with quality construction for its price point.

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