Seiko Prospex SeavsUnimatic Modello Uno U1-FMN

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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

Unimatic Modello Uno U1-FMN at true scale

Modello Uno U1-FMN

Diameter

41mm

40mm

Lug-to-Lug

46.9mm

n/a

Thickness

12.3mm

n/a

Water Resistance

200m

300m

highest

Power Reserve

70h

highest

41h

MSRP

$900

lowest

$960

Movement

Seiko 6R35

Seiko NH35

Case

5 specs
Diameter
41mm
40mm
Thickness
12.3mm
n/a
Lug-to-Lug
46.9mm
n/a
Lug Width
20mm
22mm
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6R35
Seiko NH35
Power Reserve
70h
41h
Jewels
24
0

Pricing

1 specs
MSRP
$900
$960
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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.

Unimatic Modello Uno U1-FMN

The Unimatic Modello Uno U1-FMN is widely praised for its intensely minimalist and utilitarian design, featuring clever case details like mirrored lug lines and crown guards. Owners appreciate its simple, well-executed diver aesthetic and all-black finish, with many finding the 40mm case very wearable. The Seiko NH35 automatic movement is noted as reliable. Some reviewers feel the lack of a minute track dilutes the brand's signature DNA, making it appear sterile, while others find the Super-LumiNova lume application uneven. One owner reported sharp edges on the bracelet clasp. On balance, owners and reviewers appreciate the Unimatic Modello Uno U1-FMN for its striking minimalist design and solid build quality at its price point.

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