BOLDR Supply Co. Enigmath SinharajavsMark Time Watches M 1.2
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Enigmath Sinharaja

M 1.2
Diameter
41mm
42mm
Lug-to-Lug
47.5mm
lowest
49.5mm
Thickness
12.8mm
12.5mm
lowest
Water Resistance
200m
highest
100m
Power Reserve
42h
n/a
MSRP
$599
$345
lowest
Movement
Miyota 9039
Miyota 9039
Case
5 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The BOLDR Supply Co. Enigmath Sinharaja is praised for its functional slide rule bezel, operated by a screw-down crown, and its overall wearability, with owners noting its comfortable size, lightness, and readability. The watch features a visually appealing fumé dial and a sandblasted 41mm case with polished accents, powered by the Miyota 9039 automatic movement. Some owners appreciate the "two-crown coolness" and the integrated slide rule bezel, calling it a "nerd watch" and a good Japanese-movement option under $1000. The canvas strap includes steel eyelets for durability, though one owner found the floating keeper caused discomfort. On balance, owners and reviewers rate the BOLDR Supply Co. Enigmath Sinharaja highly for its unique slide rule functionality and comfortable, attractive design at its price point.
The Mark Time Watches M 1.2 is praised by owners for its sleek black dial and fun, cheerful pink dial aesthetic, with the Miyota 9039 automatic movement noted as a convenient feature. The watch measures 42mm with a 12.5mm height and a 49.5mm lug-to-lug distance. It was available for $199 on Kickstarter. Overall, owners rate the Mark Time Watches M 1.2 highly for its fun aesthetic and value at the price point.
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