Duckworth Prestex Valjoux 7750vsHamilton Jazzmaster Auto Chrono

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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.

Valjoux 7750

Jazzmaster Auto Chrono
Diameter
43mm
42mm
Thickness
14.5mm
lowest
14.8mm
Water Resistance
30m
100m
highest
Power Reserve
48h
60h
highest
MSRP
$4,950
$1,845
lowest
Movement
Valjoux 7750
Hamilton H-31
Case
3 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Duckworth Prestex VALJOUX 7750 for its superb pusher and crown precision, with the Valjoux 7750 movement noted for its toughness, reliability, and ease of service. One owner reports feeling the rotor's movement, comparing it to other watches. The Duckworth Prestex VALJOUX 7750 is noted as being fairly thick. Overall, owners and reviewers rate the Duckworth Prestex VALJOUX 7750 highly for the reliable and serviceable Valjoux 7750 movement.
Owners widely praise the Hamilton Jazzmaster Auto Chrono for its excellent value, blending classy, sporty, and elegant design with a classic 42mm case featuring a mix of polished and brushed finishes. Reviewers and owners consistently note its great timekeeping, with figures ranging from +0.5 to +3 seconds per day, and appreciate the fit and finish that exceeds its price point. The dial is often highlighted for its detail, with applied markers, and some owners specifically praise the reverse panda configuration. However, the lume is frequently described as underwhelming or fading quickly, and the original strap or steel bracelet is sometimes found stiff or uncomfortable, leading some to replace it. One owner noted the internal bezel's functionality requires unscrewing a crown and lacks lume. On balance, owners rate the Hamilton Jazzmaster Auto Chrono highly for its exceptional value and well-executed design, despite minor criticisms regarding lume and strap comfort.
The watch features a quality automatic chronograph movement. The date setting mechanism, requiring a specialized pusher tool, is a notable drawback. Reviewers disagreed on whether the watch competes effectively with luxury alternatives at its price point.
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