Side by side

Sartory Billard SB05vsGruppo Gamma Field III GMT

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

Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

13 of 29 specs differ
Diameter
SB0538.5mm
Field III GMT40mm
Power Reserve
SB0590h
Field III GMT41h
Water Resistance
SB0550m
Field III GMT200m
MSRP
SB05
Field III GMT$459

Full specifications

Case

6 specs
Category
Dress
GMT
Diameter
38.5mm
40mm
Thickness
8.5mm
14mm
Lug-to-Lug
45.5mm
48.5mm
Lug Width
20mm
22mm
Water Resistance
50m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
LJP Cal. 7380
Seiko Instruments NH38A
Type
Manual
Automatic
Power Reserve
90h
41h
Complications
None
GMT

Pricing

1 specs
MSRP
$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.

Sartory Billard SB05

The dial's Maki-e Raden and aventurine combination is a standout feature. The 38.5mm case size and slim profile are noted for comfort.

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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