The Hamilton Jazzmaster Open Heart Auto 42 mm H32705640 is a striking fusion of elegance and mechanical intrigue. Its 42 mm polished stainless steel case houses a Midnight Blue dial with artful open-heart cutouts around the 12 and 7 o’clock positions, allowing a partial view of the movement beneath the surface. The dial’s deep blue finish evokes a sense of depth and sophistication, complemented by graceful hands and applied indices that enhance legibility and aesthetic harmony. With a sapphire crystal protecting the dial and an exhibition caseback revealing the movement’s finishing, this model communicates both refinement and openness.
At the core of the H32705640 is Hamilton’s automatic H-10 movement, which delivers a substantial 80-hour power reserve and is equipped with a Nivachron balance spring for enhanced resistance to magnetic fields. The movement operates at 21,600 vph and is visible through the skeletonized elements of the dial, providing a living connection between wearer and watch. Despite the technical underpinnings, the watch maintains a respectable thickness of around 11.44 mm, offering a balance between presence and wearability.
In terms of functionality and wearability, the Jazzmaster Open Heart 42 mm provides water resistance up to 50 m, making it suitable for everyday use and casual exposure to moisture. Paired with a deep-blue leather strap that echoes the tones of the dial, the watch carries a dress-sport versatility that transitions well between formal and casual settings. The design, mechanics, and finishing combine to deliver a watch that not only tells time but invites admiration through its elegant openness and mechanical expression.
Style Number: H32705640
Collection: Jazzmaster
Metals/Materials: Stainless steel
Glass: Sapphire
Dial: Blue
Bezel: n/a
Numbers: Indexes
Case Measurement: 42 mm
Case Back: Open Case back
Water Resistance: 5 bar (50m)
Movement Type: Automatic
Movement Model: Automatic
Calibre: H-10
Power Reserve: 80 hour
Type of Band: leather
Type of Clasp: Pin buckle
Gender: Man
Day/Date Display: n/a
Functions: Hour, Minute, Second
2 Year International Warranty
Hamilton customers are granted immediately at the time of purchase with a 2-year warranty period. Hamilton Warranty covers any pre-existing defects to be repaired free of charge and is valid worldwide.
The International Hamilton Warranty covers material and manufacturing defects existing at the time of delivery of the purchased Hamilton watch (“defects”).
This manufacturer’s warranty does not cover the life of the battery, normal wear or damages resulting from accidents.
About
Hamilton
Pioneering, practical, precise: Hamilton uses a unique combination of Swiss precision and American spirit to create distinctive, versatile watches for aficionados and style conscious individuals alike. Golden Tree Jewellers invites you to shop our Online Exclusive Hamilton Collection.
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