Side by side

Boldr Expedition EnigmathvsSpinnaker Bradner GMT

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

Expedition Enigmath
BoldrExpedition Enigmath
MSRP $599
Bradner GMT
SpinnakerBradner GMT
MSRP $299

At a glance

13 of 29 specs differ
Diameter
Expedition Enigmath41mm
Bradner GMT42mm
Power Reserve
Expedition Enigmath42h
Bradner GMT40h
Water Resistance
Expedition Enigmath200m
Bradner GMT180m
MSRP
Expedition Enigmath$599
Bradner GMT$299

Full specifications

Case

7 specs
Category
Tool
GMT
Diameter
41mm
42mm
Thickness
12.8mm
15mm
Lug-to-Lug
47.5mm
50mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
180m

Crystal & Dial

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

Movement

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

Pricing

1 specs
MSRP
$599
$299

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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 Bradner GMT

The Spinnaker Bradner GMT is praised for its awesome lume and comfortable wearability, with one owner noting the rubber strap is very comfortable and the beads of rice bracelet fits well on smaller wrists. Some find its 15mm thickness and bold colorway may not appeal to everyone, and one owner views it as more of a casual GMT with tool-watch styling than a diver. Overall, owners rate the Spinnaker Bradner GMT highly for its value and comfortable wearability.

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