Side by side

Grand Seiko SBGN027vsGruppo Gamma Field III GMT

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

SBGN027
Grand SeikoSBGN027
MSRP $3,700
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

10 of 29 specs differ
Diameter
SBGN02739mm
Field III GMT40mm
Power Reserve
SBGN02740h
Field III GMT41h
Water Resistance
SBGN027200m
Field III GMT200m
MSRP
SBGN027$3,700
Field III GMT$459

Full specifications

Case

4 specs
Diameter
39mm
40mm
Thickness
12.3mm
14mm
Lug-to-Lug
45.9mm
48.5mm
Lug Width
19mm
22mm

Crystal & Dial

1 specs
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
9F86
Seiko Instruments NH38A
Type
Quartz
Automatic
Power Reserve
40h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$3,700
$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 SBGN027

Owners widely praise the Grand Seiko SBGN027 for its exceptional Zaratsu polishing, compact 39mm size, and versatile monochrome aesthetic, noting its thin profile and suitability as a grab-and-go watch. The 9F quartz movement delivers highly accurate timekeeping, with one owner reporting +/- 10 seconds per year. However, some find the lume limited, the bracelet lacks micro-adjustments, and the GMT hand can be easily mistaken for the minute hand. One owner reported a black index on the bezel disappearing after a couple of months. On balance, owners rate the Grand Seiko SBGN027 highly for its premium finishing and accurate HAQ GMT movement in a wearable size.

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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