Breitling Super Chronomat Automatic 38vsHamilton Jazzmaster Open Heart Auto
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Owners find the Breitling Super Chronomat Automatic 38 on a rouleaux bracelet works well, though some note the case feels substantial and wish for bracelet micro-adjustment. One owner reported significant accuracy issues, with the watch running between +5 to +20 seconds per day or -30 seconds per day, and an inconsistent power reserve around 36 hours, requiring two service visits. Overall, owners are split on the 38mm sizing, with some finding it ideal and others preferring larger cases.
The Hamilton Jazzmaster Open Heart Auto is noted for its dressy yet versatile design, featuring striking gradient dials and intricately shaped cutouts that reveal the H-10 movement. It boasts an 80-hour power reserve and Nivachron hairspring. The watch is available in 36mm, 40mm, or 42mm stainless steel cases. On balance, the Hamilton Jazzmaster Open Heart Auto is appreciated for its visually engaging dial and movement display at its price point.
The smoked dial's precision cutouts offer a captivating view of the automatic movement. Legibility is compromised by the open-heart design.
At a glance
17 of 29 specs differFull specifications
Case
8 specsCrystal & Dial
4 specsMovement
4 specsPricing
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