Side by side

Spinnaker Dumas GMTvsSpinnaker Spence 300

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

Dumas GMT
SpinnakerDumas GMT
MSRP $399
Spence 300
SpinnakerSpence 300
MSRP $650

At a glance

7 of 29 specs differ
Diameter
Dumas GMT44mm
Spence 30040mm
Power Reserve
Dumas GMT40h
Spence 30040h
Water Resistance
Dumas GMT300m
Spence 300300m
MSRP
Dumas GMT$399
Spence 300$650

Full specifications

Case

4 specs
Category
GMT
Diver
Diameter
44mm
40mm
Thickness
15mm
11.5mm
Lug Width
22mm
20mm

Crystal & Dial

1 specs
Dial Color
Blue
Aquamarine

Movement

1 specs
Caliber
Seiko NH34A
SII NH35A

Pricing

1 specs
MSRP
$399
$650

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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.

Spinnaker Spence 300

The Spinnaker Spence 300 is widely praised for its slim 10.9mm case and 40mm diameter, offering a comfortable and uncommon thin diver design at its price point. Reviewers and owners highlight its value, especially below $350, and its blend of retro design with modern specifications, including a 300m depth rating and a fully indexed bezel. Some owners, however, find the dial printing and bracelet finishing to be less refined, with one noting the bracelet's male end links as a drawback. The consensus is that the Spinnaker Spence 300 is highly regarded for its exceptional value and wearable dimensions, making it a strong contender for an everyday sports watch.

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