Side by side

Christopher Ward C63 Sealander Extreme GMTvsGruppo Gamma Field III GMT

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

C63 Sealander Extreme GMT
Christopher WardC63 Sealander Extreme GMT
MSRP $1,850
Field III GMT
Gruppo GammaField III GMT
MSRP $459

At a glance

12 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
Field III GMT40mm
Power Reserve
C63 Sealander Extreme GMT56h
Field III GMT41h
Water Resistance
C63 Sealander Extreme GMT150m
Field III GMT200m
MSRP
C63 Sealander Extreme GMT$1,850
Field III GMT$459

Full specifications

Case

5 specs
Diameter
48mm
40mm
Thickness
12.05mm
14mm
Lug-to-Lug
48mm
48.5mm
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
200m

Crystal & Dial

2 specs
AR Coating
Underside
Yes
Lume
SLN X1 BL / GL
Super-LumiNova

Movement

4 specs
Caliber
SW330
Seiko Instruments NH38A
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
41h
Complications
GMT, Moonphase, Day-date
GMT

Pricing

1 specs
MSRP
$1,850
$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.

Christopher Ward C63 Sealander Extreme GMT

Owners and reviewers widely praise the Christopher Ward C63 Sealander Extreme GMT for its excellent value, tactical and travel-ready design, and impressive lume, with the black dial being a collective favorite. Its 41mm brushed steel case is noted for comfort and wearability, complemented by a well-proportioned design and excellent legibility. The watch features a Sellita SW330-2 movement with a 56-hour power reserve and 150m water resistance, including a shock-absorbing mount. Some find its refinement slightly less than pricier alternatives, and its GMT movement is considered less practical than a flyer GMT. On balance, the Christopher Ward C63 Sealander Extreme GMT is highly regarded by owners and reviewers for its compelling blend of features, rugged design, and exceptional value.

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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