Side by side

Spinnaker Dumas GMTvsWolbrook Douglas Grand Prix Racing

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

Dumas GMT
SpinnakerDumas GMT
MSRP $399
Douglas Grand Prix Racing
WolbrookDouglas Grand Prix Racing
MSRP $442

At a glance

9 of 29 specs differ
Diameter
Dumas GMT44mm
Douglas Grand Prix Racing40mm
Power Reserve
Dumas GMT40h
Douglas Grand Prix Racing40h
Water Resistance
Dumas GMT300m
Douglas Grand Prix Racing100m
MSRP
Dumas GMT$399
Douglas Grand Prix Racing$442

Full specifications

Case

6 specs
Category
GMT
Racing
Diameter
44mm
40mm
Thickness
15mm
13mm
Lug-to-Lug
48mm
Lug Width
22mm
20mm
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Blue
Steel

Movement

1 specs
Caliber
Seiko NH34A
Miyota 8315

Pricing

1 specs
MSRP
$399
$442

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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.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

Wolbrook Douglas Grand Prix Racing

The Wolbrook Douglas Grand Prix Racing features a Hesalite box crystal, a roulette date wheel, and a 40mm steel case. Owners note it is powered by a Miyota 8315 movement with a 60-hour power reserve, regulated to within ±15 seconds per day. One owner points out that an earlier iteration of the movement did not hack and had a 42-hour power reserve. On balance, owners appreciate the Hesalite crystal and roulette date wheel at its $275 price point.

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