Seiko Seiko 5 Sports SKX seriesvsUnimatic 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 Seiko 5 Sports SKX series at true scale

Seiko 5 Sports SKX series

Unimatic Modello Uno U1-FMN at true scale

Modello Uno U1-FMN

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

$960

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
$960
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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 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.