Side by side

Boldr Expedition EnigmathvsJack Mason Strat-o-timer GMT

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

Expedition Enigmath
BoldrExpedition Enigmath
MSRP $599
Strat-o-timer GMT
Jack MasonStrat-o-timer GMT
MSRP $1,149
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

Boldr is widely praised for its attractive fumé dials, blend of sandblasted and polished case finishes, and excellent legibility. Owners report good build quality and value, with some calling it an excellent GADA or hiking watch, and the Miyota 9039 movement is noted for its smooth seconds hand sweep. However, the practical usefulness of the slide rule bezel is questioned, and some find the designs "microbrand-y" or potentially overpriced, with one owner reporting a negative warranty experience. On balance, owners and reviewers rate Boldr highly for its attractive dials and solid build quality at the price point.

From video reviewers

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.

Jack Mason Strat-o-timer GMT

Owners and reviewers widely praise the Jack Mason Strat-o-timer GMT for its exceptional value and traveler GMT functionality powered by the Miyota 9075 movement. Specific strengths highlighted include impressive fit and finish, screw-in bracelet pins, on-the-fly adjustment, sapphire crystal front and back, a screw-down crown, and a lumed bezel. The 7-link bracelet, with its micro-adjust buckle offering 9 points of adjustment, is frequently cited as a standout feature, with some owners comparing it favorably to much more expensive watches. Some reviewers note "chubby" hour markers and a potentially plastic bezel insert, though others state it is sapphire. The watch is praised for its comfortable 42mm case and vintage aesthetic. Overall, owners rate the Jack Mason Strat-o-timer GMT highly for its outstanding value and well-executed traveler GMT complication.

At a glance

12 of 29 specs differ
Diameter
Expedition Enigmath41mm
Strat-o-timer GMT42mm
Power Reserve
Expedition Enigmath42h
Strat-o-timer GMT40h
Water Resistance
Expedition Enigmath200m
Strat-o-timer GMT200m
MSRP
Expedition Enigmath$599
Strat-o-timer GMT$1,149

Full specifications

Case

6 specs
Category
Tool
Diameter
41mm
42mm
Thickness
12.8mm
13.2mm
Lug-to-Lug
47.5mm
49mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

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

Movement

2 specs
Caliber
Miyota 9039
Miyota 9075
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$599
$1,149
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