Scurfa Diver One D1-500 NDvsUnimatic Modello Quattro UT4-TW Collab Time Only

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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.

Diver One D1-500 ND

Modello Quattro UT4-TW Collab Time Only
Diameter
40mm
40mm
Lug-to-Lug
47.7mm
n/a
Thickness
14.4mm
n/a
Water Resistance
500m
highest
300m
MSRP
$298
lowest
$595
Movement
ETA F06.402
Seiko VH31
Case
5 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Scurfa Diver One D1-500 ND is widely praised for its 40mm case size, which owners find comfortable for everyday wear and reminiscent of classic dive watch proportions. Reviewers highlight its robust build, precise bezel, and excellent anti-reflective sapphire crystal, contributing to high legibility alongside its handset. The aluminum bezel offers a distinct aesthetic, and the 500-meter water resistance is considered more than adequate for recreational diving. One owner noted the lume is good, though not as strong as on other Scurfa models. Overall, owners and reviewers rate the Scurfa Diver One D1-500 ND highly for its comfortable wearability and tool-like legibility at its price point.
The Unimatic Modello Quattro UT4-TW Collab Time Only is praised for its robust, MIL-STD-810 certified build and minimalist design, with one owner appreciating its simple and clean aesthetic after initial reservations. However, one owner disliked the TPU strap and experienced a recurring rotor issue requiring a lengthy and poor customer service experience for repair. The watch features a 40mm sandblasted steel case, which may sit flat on smaller or round wrists due to less downward lug curvature. Overall, owners and reviewers rate the Unimatic Modello Quattro UT4-TW Collab Time Only highly for its rugged build and clean design.
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