Seiko Seiko 5 Sports SKX seriesvsUnimatic Modello Uno

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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 Seiko 5 Sports SKX series at true scale

Seiko 5 Sports SKX series

Unimatic Modello Uno at true scale

Modello Uno

Diameter

38mm

40mm

Lug-to-Lug

44.2mm

n/a

Thickness

12.1mm

n/a

Water Resistance

100m

300m

highest

Power Reserve

41h

41h

MSRP

$350

lowest

$740

Movement

Seiko 4R36

Seiko NH35

Case

5 specs
Diameter
38mm
40mm
Thickness
12.1mm
n/a
Lug-to-Lug
44.2mm
n/a
Lug Width
20mm
22mm
Water Resistance
100m
300m

Crystal & Dial

3 specs
Crystal
Hardlex
Sapphire
Dial Color
n/a
n/a
Lume
LumiBrite on hands and index(es)
None

Movement

2 specs
Caliber
Seiko 4R36
Seiko NH35
Jewels
24
0

Pricing

1 specs
MSRP
$350
$740
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Reviews

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

Seiko 5 Sports SKX series

The Seiko 5 Sports SKX series is widely praised as an excellent value gateway watch, with owners and reviewers highlighting its solid build and powerful lume. The 22mm bracelet is noted for its comfort, and the watch offers numerous style options. Some owners find the original SKX models heavy and bulky, while others appreciate their ruggedness and iconic dive watch design. The Seiko 5 Sports SKX series offers an upgraded movement with hacking and hand-winding, and standard spring bars for easier strap changes. However, it lacks the screw-down crown and ISO certification of the original SKX, leading some to consider it less of a tool watch. On balance, owners and reviewers rate the Seiko 5 Sports SKX series highly for its value and modern features, despite some preferring the tool watch capabilities of its predecessor.

Unimatic Modello Uno

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.