Side by side

Grand Seiko SBGN027vsGruppo Gamma Field III GMT Date

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 Date
Gruppo GammaField III GMT Date
MSRP $459

At a glance

10 of 29 specs differ
Diameter
SBGN02739mm
Field III GMT Date40mm
Power Reserve
SBGN02740h
Field III GMT Date41h
Water Resistance
SBGN027200m
Field III GMT Date200m
MSRP
SBGN027$3,700
Field III GMT Date$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, Date

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 Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

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