Hamilton Khaki Navy Frogman AutovsSeiko Prospex Alpinist

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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.

Hamilton Khaki Navy Frogman Auto at true scale

Khaki Navy Frogman Auto

Seiko Prospex Alpinist at true scale

Prospex Alpinist

Diameter

41mm

38mm

Lug-to-Lug

n/a

46mm

Thickness

13.1mm

12.9mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

80h

highest

70h

MSRP

$1,395

$503

lowest

Movement

Hamilton H-10

Seiko 6R35

Case

5 specs
Diameter
41mm
38mm
Thickness
13.09mm
12.9mm
Lug-to-Lug
n/a
46mm
Lug Width
20mm
n/a
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Black
n/a
Lume
None
LumiBrite

Movement

3 specs
Caliber
Hamilton H-10
Seiko 6R35
Power Reserve
80h
70h
Complications
None
Date

Pricing

1 specs
MSRP
$1,395
$503
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton Khaki Navy Frogman Auto

The Hamilton Khaki Navy Frogman Auto is praised for its wearable 41mm size, graceful silhouette, and robust tool-watch aesthetic, with reviewers highlighting its clean, date-free dial, well-defined bezel clicks, and surprisingly nice crown. Owners and reviewers note the pliable rubber strap and a 44mm lug-to-lug measurement that works well on smaller wrists, alongside a 46mm case option in the line. The watch is powered by the Hamilton H-10 automatic movement with an 80-hour power reserve. Some drawbacks noted include a stiff rubber strap, unforgiving buckle, and bezel grip in wet conditions, while one owner found the bezel action a bit stiff. Overall, owners and reviewers rate the Hamilton Khaki Navy Frogman Auto highly for its balanced design and wearability at its price point.

Seiko Prospex Alpinist

Owners widely praise the Seiko Prospex Alpinist for its excellent 38mm case size and versatile design, making it a capable everyday and business-casual watch. The dark green sunburst dial is a standout feature, described as dynamic and beautifully textured. Its character is further enhanced by the compass bezel and gold indices, and it is considered a great "GADA" (Go Anywhere, Do Anything) watch and a "strap monster" adaptable to various bands. One owner notes the gold tone is less convincing than solid gold alternatives. Overall, owners rate the Seiko Prospex Alpinist highly for its appealing design and wearability at the price point.