Hamilton Khaki Navy Scuba AutovsSan Martin BB58


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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.

Khaki Navy Scuba Auto

BB58
Diameter
40mm
40mm
Thickness
12.9mm
n/a
Water Resistance
100m
200m
highest
Power Reserve
80h
n/a
MSRP
$975
$288
lowest
Movement
Hamilton H-10
Seiko NH35
Case
3 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Hamilton Khaki Navy Scuba Auto as an excellent value proposition under $1,000, highlighting its distinctive design, legible lume, and tactile bezel. Some owners appreciate its 40mm case size for comfortable everyday wear, while others find the 43mm variants feel great on the wrist. The H-10 automatic movement provides an 80-hour power reserve. However, the 43mm case size is noted as large by some, and the steel bracelet could benefit from a taper and a quick-adjust clasp. On balance, owners and reviewers rate the Hamilton Khaki Navy Scuba Auto highly for its robust tool watch design and impressive value at its price point.
The 80-hour power reserve from the H-10 movement is a significant strength. Reviewers noted the bezel action and bracelet/clasp as points of focus.
Owners widely praise the San Martin BB58 as a high-quality BB58 homage that feels premium for the money; one calls it "basically as close as you can get without paying Tudor prices" and another describes it as fantastic quality for the price. Specific highlights include its gorgeous yet masculine look and the on-the-fly adjustable clasp, which one owner says they have not seen matched on any $1k watch. One owner's own San Martin runs within about 6 seconds per day and has never missed a beat. The main criticism is that one owner would like the riveted links and logo changed, and a forum member notes that some advise avoiding these watches without explaining why. Overall, owners rate the San Martin BB58 very highly for its value and finishing, with the clasp and styling cited as the standout reasons.
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