Balticus Watches MoonfishvsSeiko Prospex Sea

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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.

Balticus Watches Moonfish at true scale

Moonfish

Seiko Prospex Sea at true scale

Prospex Sea

Diameter

40mm

43.8mm

Lug-to-Lug

n/a

48.7mm

Thickness

n/a

12.8mm

Water Resistance

200m

200m

Power Reserve

42h

highest

41h

MSRP

$1,243

$625

lowest

Movement

Miyota 9015

Seiko 4R35

Case

5 specs
Diameter
40mm
43.8mm
Thickness
n/a
12.8mm
Lug-to-Lug
n/a
48.7mm
Lug Width
n/a
22mm
Material
904L
Stainless Steel

Crystal & Dial

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

Movement

3 specs
Caliber
Miyota 9015
Seiko 4R35
Power Reserve
42h
41h
Jewels
0
23

Pricing

1 specs
MSRP
$1,243
$625
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Reviews

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

Balticus Watches Moonfish

Owners widely praise the Balticus Moonfish for its refined aesthetic and unique design elements, with one owner calling the gradient dial neat and another finding the Stardust variant a perfect combination of unusual materials and raw feeling, highlighting the Damascus steel pattern. Reviewers note the watch's 904L steel case and unique knurled bezel. One reviewer considers the EUR 1,305.26 price high for a Miyota 9015-powered watch. Overall, owners and reviewers rate the Balticus Moonfish highly for its distinctive visual appeal and build quality at its price point.

Seiko Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value as a sport watch, with owners highlighting its comfortable wearability and generous lume. Reviewers note its solid build quality and attractive design, with some specifically mentioning the matte black dial as a strong point. One owner reports accuracy around +1 to +2 seconds per day. The 43.8mm case size is considered substantial by some, and one owner found the watch heavy and thick, regretting not choosing a different variant. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its blend of classic design and modern utility at an accessible price point.