Side by side

Boldr Expedition EnigmathvsHamilton Khaki Field Mechanical

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

Owners widely praise the Hamilton Khaki Field Mechanical as an archetype of a field watch, highlighting its thin case, excellent finishing, and smooth winding action, with some calling it the best pure field watch available. The daily winding ritual is considered a charming aspect of ownership, and the branding is noted as tasteful and subtle. One owner specifically appreciates the lugs. A drawback cited is the highly reflective, non-AR-coated crystal, and accuracy ranges from -6 seconds per day to unspecified better performance. Overall, owners rate the Hamilton Khaki Field Mechanical highly for its rugged, all-business aesthetic and value as a quintessential field watch.

From video reviewers

The watch's pure field style design is a significant strength. The lume brightness is a shared weakness. Reviewers disagreed on the power reserve, with one stating 80 hours and another 46 hours.

At a glance

14 of 29 specs differ
Diameter
Expedition Enigmath41mm
Khaki Field Mechanical36mm
Power Reserve
Expedition Enigmath42h
Khaki Field Mechanical80h
Water Resistance
Expedition Enigmath200m
Khaki Field Mechanical100m
MSRP
Expedition Enigmath$599
Khaki Field Mechanical$725

Full specifications

Case

6 specs
Category
Tool
Field
Diameter
41mm
36mm
Thickness
12.8mm
10.2mm
Lug-to-Lug
47.5mm
46mm
Lug Width
20mm
18mm
Water Resistance
200m
100m

Crystal & Dial

4 specs
Crystal
Sapphire
Acrylic
AR Coating
Yes
Dial Color
Enigmath Coconino
Black
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
$725
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