Hamilton Jazzmaster Maestro Auto ChronovsLouis Erard 2300 Sport 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 Maestro Auto Chrono

2300 Sport Chronograph
Diameter
45mm
44mm
Thickness
15.3mm
n/a
Water Resistance
100m
highest
50m
Power Reserve
60h
highest
48h
MSRP
$1,995
lowest
$4,146
Movement
Hamilton H-21
Valjoux 7750
Case
5 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 Maestro Auto Chrono's premium case finishing and versatile dial layout, suitable for both casual and formal wear. Some owners note the 45mm size can be bulky and may not fit under shirt cuffs, and a lack of a second hand is a deal-breaker for some. Accuracy figures range from gaining about 5 seconds per day to keeping time within 10 seconds per day even after many years without service. Concerns exist regarding the serviceability and potential maintenance costs of the H-21 movement. Overall, owners rate the Hamilton Jazzmaster Maestro Auto Chrono highly for its substantial build quality and attractive design despite some size and movement serviceability considerations.
The Valjoux 7750 chronograph movement is cited as a strength. Reviewers noted the movement is not without flaws.
Owners and reviewers highlight the Louis Erard 2300 Sport Chronograph's lightweight titanium case with satin finishing and polished bevels, which makes its 44mm size feel less cumbersome. The watch is noted for its retro-modern aesthetic and unique dial designs, with one owner appreciating the addition of a moon phase complication and its practical alternative to a dress watch. Reviewers point out that its 50m water resistance lags behind modern alternatives, and one found the rainbow minute track too subtle. Overall, owners and reviewers rate the Louis Erard 2300 Sport Chronograph well for its distinctive design and comfortable wearability in titanium at its price point.
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