Unimatic Modello Tre U3-ASvsLongines HydroConquest
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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.

Modello Tre U3-AS

HydroConquest
Diameter
40mm
42mm
Water Resistance
300m
300m
MSRP
$910
lowest
$1,600
Movement
Seiko VK64
Quartz
Case
3 specsCrystal & Dial
4 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Unimatic Modello Tre U3-AS is lauded for its distinctive Italian design and minimalist, vintage-inspired dive chronograph aesthetic, with its meca-quartz movement noted as a smart choice for slimness and affordability. Owners praise the matte blue dial and Unimatic's signature design language, including the crown and pushers, with the red lettering seen as a nice accent. Some reviewers flag the meca-quartz movement as a potential drawback for purists, and legibility of the chronograph markings can be challenging due to their small size and faint application. Overall, owners and reviewers rate the Unimatic Modello Tre U3-AS highly for its unique aesthetic and value proposition driven by its meca-quartz movement.
Owners widely praise the Longines HydroConquest for its superb finishing, comparable to higher-end competitors, and its value proposition. The dial is frequently lauded for its vibrancy and legibility, with specific appreciation for the glossy lacquer and sunburst finishes. Wearability is a strong point, with the 39mm size noted as slim and comfortable, though opinions on the bracelet's refinement are mixed, with some finding it less premium than alternatives and lacking tool-less micro-adjustment, while others praise its comfort and fit. Some owners find the design derivative of other dive watches, while others see it as a beautiful and refined evolution. Accuracy is generally good, with one owner reporting approximately -2 seconds per day. The quartz variant is noted for its lower price point and cost of ownership. Overall, owners rate the Longines HydroConquest highly for its excellent finishing and value at the price point.
The Longines HydroConquest is praised for its design and value proposition. Reviewers question the value compared to alternatives.
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