Seiko Seiko 5 Sports SKX seriesvsUnimatic Modello Uno U1-NU

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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-NU at true scale

Modello Uno U1-NU

Diameter

38mm

40mm

Lug-to-Lug

44.2mm

n/a

Thickness

12.1mm

n/a

Water Resistance

100m

300m

highest

Power Reserve

41h

n/a

MSRP

$350

lowest

$910

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
n/a
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

3 specs
Caliber
Seiko 4R36
Seiko NH35
Power Reserve
41h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$350
$910
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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-NU

The Unimatic Modello Uno U1-NU is widely appreciated for its intensely minimalist, utilitarian design that feels like a technical instrument, with clever case details and a matte black dial offering hypnotic light play. Owners and reviewers consistently praise its unique style and solid build quality at its price point, noting impressive case finishing and a remarkably low price for the perceived quality. The Seiko NH35 automatic movement is considered reliable and keeps good time. However, the lume application is slightly uneven between the dial, hands, and bezel pearl, and some find the clasp sharp. The 24-hour rotating bezel's hourly clicks are noted as a missed opportunity for a more purposeful GMT complication. Overall, owners rate the Unimatic Modello Uno U1-NU highly for its distinctive minimalist aesthetic and strong build quality for the price.

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