Side by side

Hamilton Khaki Navy Frogman AutovsSeiko Prospex Sea

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

Khaki Navy Frogman Auto
HamiltonKhaki Navy Frogman Auto
MSRP $1,395
Prospex Sea
SeikoProspex Sea
MSRP $900

At a glance

10 of 29 specs differ
Diameter
Khaki Navy Frogman Auto41mm
Prospex Sea41mm
Power Reserve
Khaki Navy Frogman Auto80h
Prospex Sea70h
Water Resistance
Khaki Navy Frogman Auto300m
Prospex Sea200m
MSRP
Khaki Navy Frogman Auto$1,395
Prospex Sea$900

Full specifications

Case

3 specs
Thickness
13.09mm
12.3mm
Lug-to-Lug
46mm
46.9mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
H-10
6R35
Power Reserve
80h
70h
Jewels
25
24

Pricing

1 specs
MSRP
$1,395
$900

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What people say

Owners + reviewers, side by side

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 and graceful silhouette, with reviewers highlighting its clean, date-free dial and well-defined bezel clicks. The H-10 automatic movement provides an 80-hour power reserve. Some reviewers note drawbacks such as a stiff rubber strap and buckle, and bezel grip in wet conditions. The case features brushed surfaces with polished bevels. On balance, reviewers rate the Hamilton Khaki Navy Frogman Auto highly for its blend of standout design and wearable dimensions.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

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