Seiko Prospex SeavsTool Watch Co TWCO. AMA Diver Signature Series

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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.

Seiko Prospex Sea at true scale

Prospex Sea

Tool Watch Co TWCO. AMA Diver Signature Series at true scale

TWCO. AMA Diver Signature Series

Diameter

41mm

41.5mm

Lug-to-Lug

46.9mm

lowest

48mm

Thickness

12.3mm

lowest

12.8mm

Water Resistance

200m

300m

highest

Power Reserve

70h

highest

42h

MSRP

$900

$595

lowest

Movement

Seiko 6R35

Miyota 9039

Case

5 specs
Diameter
41mm
41.5mm
Thickness
12.3mm
12.8mm
Lug-to-Lug
46.9mm
48mm
Material
Stainless Steel
Titanium
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6R35
Miyota 9039
Power Reserve
70h
42h
Jewels
24
0

Pricing

1 specs
MSRP
$900
$595
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Reviews

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

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its value and robust build, with many highlighting its excellent lume and attractive design. Some owners find the 41mm case size perfect, while others with smaller wrists consider it too large, thick, and heavy. The stock rubber strap is noted as uncomfortable for land wear by one owner. Overall, owners rate the Seiko Prospex Sea highly for its design and value at the price point.

Tool Watch Co TWCO. AMA Diver Signature Series

Owners praise the Tool Watch Co TWCO. AMA Diver Signature Series for its exceptional legibility and the practicality of its rotating bezel for timing. One reviewer notes the watch offers significant value at its $295 price point, featuring a titanium case and Miyota 9039 movement. However, this reviewer also finds the ultra-clean dial to be somewhat lacking in balance. On balance, owners and reviewers rate the Tool Watch Co TWCO. AMA Diver Signature Series highly for its outstanding legibility and value proposition.

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