Seiko Prospex SeavsUnimatic Modello Uno

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Seiko Prospex Sea

MSRP $900

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Unimatic Modello Uno

Ref. uwk-u1-e·MSRP $740

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Buy from Unimatic Used on eBay

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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.

Prospex Sea

Modello Uno

Diameter

Across the case, crown excluded.

41mm

40mm

Lug-to-Lug

The number that decides fit.

46.9mm

n/a

Thickness

How it sits under a cuff.

12.3mm

n/a

Water Resistance

Rated in meters.

200m

300m

highest

Power Reserve

How long it runs off the wrist.

70h

highest

41h

MSRP

Sticker price, new.

$900

$740

lowest

Movement

What drives the hands.

Seiko 6R35

Seiko NH35

Spec

Prospex Sea

Modello Uno

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

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

Seiko 6R35

Seiko NH35

Power Reserve

70h

41h

Jewels

Pricing

1 specs

MSRP

$900

$740

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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.

Owners widely praise the Unimatic Modello Uno's exceptionally well-finished case and minimalistic, utilitarian design, which feels like a technical instrument. Reviewers note clever case details like mirrored lugs and crown guards, a mix of brushed and polished finishes, and a matte black dial that offers interesting light play. The sapphire crystal's anti-reflective coating creates hypnotic color-swapping effects. Some owners find the stock bracelet and rubber strap uncomfortable, preferring the NATO option. The Seiko NH35 automatic movement is described as reliable. On balance, owners and reviewers rate the Unimatic Modello Uno highly for its distinctive, minimalistic design and impressive case finishing at its price point.