Side by side

Boldr Expedition EnigmathvsSpinnaker Dumas GMT

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

Expedition Enigmath
BoldrExpedition Enigmath
MSRP $599
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

13 of 29 specs differ
Diameter
Expedition Enigmath41mm
Dumas GMT44mm
Power Reserve
Expedition Enigmath42h
Dumas GMT40h
Water Resistance
Expedition Enigmath200m
Dumas GMT300m
MSRP
Expedition Enigmath$599
Dumas GMT$399

Full specifications

Case

7 specs
Category
Tool
GMT
Diameter
41mm
44mm
Thickness
12.8mm
15mm
Lug-to-Lug
47.5mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enigmath Coconino
Blue
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Miyota 9039,
Seiko NH34A
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$599
$399

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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.

Boldr Expedition Enigmath

The watch's slide rule function is a convenient feature, allowing for calculations on the go. One potential drawback is the use of the Japanese Miyota 9039 movement, which may be a trade-off for some buyers. Reviewers disagree on whether the quick 'on the fly' adjust bracelet is a more significant advantage than the watch's sapphire crystal for durability and scratch resistance.

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.

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