Hamilton Jazzmaster Auto ChronovsKobold Rattrapante Chronograph

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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.

Jazzmaster Auto Chrono

Rattrapante Chronograph
Diameter
42mm
38mm
Thickness
14.8mm
lowest
16mm
Water Resistance
100m
100m
Power Reserve
60h
n/a
MSRP
$1,845
lowest
$4,500
Movement
Hamilton H-31
Valjoux 7750
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 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.
Owners praise the Kobold Rattrapante Chronograph's high-contrast hands with luminous centers for excellent legibility on the white dial. One owner suggests a blue dial with polished steel subdials would be more interesting. On balance, owners appreciate the Kobold Rattrapante Chronograph for its legibility on the white dial.
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