Hamilton Jazzmaster Open Heart - References, Prices and Owners' Reviews

The Hamilton Jazzmaster Open Heart is a watch that combines classic elegance and innovative design, reflecting the brand's rich watchmaking heritage while adapting to contemporary trends. This watch is distinguished by its openwork dial, offering a fascinating view of the internal mechanical movement, a symbol of Swiss precision and artisanal know-how.

Design and Aesthetics

The design of the Jazzmaster Open Heart is a harmonious fusion of tradition and modernity. The stainless steel case is available in several sizes, including 36mm, 40mm and 42mm diameter, allowing each user to choose the dimension that best suits their wrist and style. The finishes alternate between polished and brushed, adding depth and contrast to the overall aesthetic of the watch.

The dial is the central element of this watch, with its artistic openings that partially reveal the automatic movement beneath. These cutouts, far from altering readability, add a dynamic and contemporary dimension to the whole. The dials come in a variety of colors, including black, silver, midnight blue with an aventurine finish, emerald green, and burgundy, each providing a distinct personality to the watch. Applied hour markers and dauphine-style hands, often coated with Super-LumiNova, ensure clear time reading, even in low light conditions.

Movement and Performance

At the heart of the Jazzmaster Open Heart is the H-10 caliber, a Swiss automatic movement known for its reliability and precision. This movement offers an impressive power reserve of 80 hours, thanks to the use of an elongated barrel spring and modern materials such as Nivachron for the hairspring, improving resistance to magnetic fields and temperature variations. The movement beats at a frequency of 21,600 vibrations per hour (3 Hz), ensuring consistent precision and increased durability.

Glass and Sealing

The watch features a slightly domed sapphire crystal, known for its scratch resistance and exceptional clarity. This glass effectively protects the dial while providing optimal visibility from different angles. The transparent case back, also in sapphire, allows you to admire the movement in action, adding an additional dimension to the user experience. With a water resistance of up to 50 meters (5 ATM), the Jazzmaster Open Heart is suitable for everyday use, resistant to splashes and light immersion.

Bracelets and Personalization

Hamilton offers a variety of straps for the Jazzmaster Open Heart, allowing users to personalize their watch according to their preferences. Options include high-quality calfskin straps, available in different colors like black, patina brown or dark blue, each with a classic pin buckle. For a more contemporary look, a five-link stainless steel bracelet with an alternating polished/brushed finish and a butterfly folding clasp is also available. This versatility allows the watch to adapt to various occasions, whether formal or casual.

Variants and Evolutions

The Jazzmaster Open Heart collection has been enriched over the years with new references, each bringing distinct nuances to the original design. For example, recent models introduced in January 2025 feature midnight blue dials with an aventurine-like finish, offering special depth and brilliance, as well as emerald green dials with a gradient effect, adding a touch of modernity and sophistication to the collection. These new versions are available in 36mm and 42mm sizes, catering to the varied preferences of watch enthusiasts.

Conclusion

The Hamilton Jazzmaster Open Heart embodies the perfect balance between watchmaking tradition and stylistic innovation. Its distinctive design, showcasing the mechanical movement through an openwork dial, combined with top-notch Swiss engineering, makes it a remarkable piece in the contemporary watchmaking landscape. Whether for everyday use or for special occasions, this watch offers an alluring combination of functionality, aesthetics and craftsmanship.

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(Updated March 2025)