Side by side

Boldr Expedition EnigmathvsHamilton Khaki Field Mechanical Bronze

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

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.

Hamilton Khaki Field Mechanical Bronze

Owners and reviewers widely praise the Hamilton Khaki Field Mechanical Bronze for its attractive bronze case that develops a unique patina, its comfortable 38mm size, and the satisfying winding action of its hand-wound H-50 movement, which provides an 80-hour power reserve. The vintage military design, legible matte black dial with beige lume, and overall value are frequently highlighted as key strengths. Some owners note the lugs appear large, and while earlier models had 50m water resistance, newer versions offer 100m. Overall, owners and reviewers rate the Hamilton Khaki Field Mechanical Bronze highly for its vintage aesthetic and character-building patina at an accessible price.

From video reviewers

The watch's bronze case develops a unique patina over time, adding to its character. A potential weakness is the watch's bronze reacting with certain skin types or environments, causing discoloration or staining. Reviewers disagree on the lume brightness, with one reviewer finding it lacking and the other not mentioning it.

At a glance

13 of 29 specs differ
Diameter
Expedition Enigmath41mm
Khaki Field Mechanical Bronze38mm
Power Reserve
Expedition Enigmath42h
Khaki Field Mechanical Bronze80h
Water Resistance
Expedition Enigmath200m
Khaki Field Mechanical Bronze50m
MSRP
Expedition Enigmath$599
Khaki Field Mechanical Bronze$1,025

Full specifications

Case

6 specs
Category
Tool
Field
Diameter
41mm
38mm
Thickness
12.8mm
9.6mm
Lug-to-Lug
47.5mm
46mm
Material
Stainless Steel
Titanium
Water Resistance
200m
50m

Crystal & Dial

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

Movement

3 specs
Caliber
Miyota 9039
H-50 (ETA 2801-2 base)
Type
Automatic
Manual
Power Reserve
42h
80h

Pricing

1 specs
MSRP
$599
$1,025
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