Hamilton Jazzmaster Open Heart
Key Highlights
- Open-heart dial revealing the H-10 automatic movement and balance wheel in motion.
- Three case sizes – 36mm, 40mm and 42mm – all powered by the H-10 automatic with 80-hour power reserve.
- Nivachron™ balance spring for enhanced reliability, under sapphire crystal with anti-reflective coating.
- Smoky, multi-tone dials in brown, gold, silver, blue and turquoise with metallic accents.
- Versatile aesthetic for ceremonies, anniversaries and everyday wear.
Mechanics made visible
The Hamilton Jazzmaster Open Heart is built on the idea that mechanical beauty should be seen. The dial is opened to reveal the balance wheel and key components, turning the movement into a central design element rather than something reserved for the caseback.
The watch maintains the clean lines of the Jazzmaster collection while adding a more expressive, technical character on the wrist. The Open Heart aperture draws the eye inward, with details that shift as they catch the light, inviting closer inspection throughout the day.
More than a technical specification, the visible movement becomes a visual experience that reflects personal milestones as well as everyday style. The design balances refinement with the quiet animation of a Swiss automatic watch always in motion.
Smoky dials and nuanced colour
Each Jazzmaster Open Heart dial features a smoky effect that blends up to three tones. Warm browns, gold accents and silver sunray finishes create depth, while selected versions introduce deep blue or turquoise for a more vivid presence.
The Jazzmaster Open Heart Auto 36mm pairs a stainless steel case around 10mm thick with midnight blue or turquoise dials. Rose gold colour plated hour and minute hands with Super-LumiNova® enhance legibility and warmth, matched to either a five-row metal bracelet with folding clasp and pushers or a white calf leather strap with small grain and a steel pin buckle.
For a larger option, the Jazzmaster Open Heart Auto 40mm uses an 11.05mm-thick stainless steel case and smoky gold, smoky silver or turquoise dials. Yellow gold or rose gold colour plated hands and indexes with Super-LumiNova® echo the dial tones, and the watch is fitted to a five-row metal bracelet or a brown calf leather strap with patina finish.
The Jazzmaster Open Heart Auto 42mm scales the concept up with a 42mm stainless steel case, 11.44mm thickness and 22mm lug width. It is offered with smoky brown or smoky silver dials, yellow gold colour plated hands and indexes with Super-LumiNova®, and a choice of bracelet or brown patinated calf leather strap similar to the 40mm models.
H-10 movement and technical refinement
All three sizes are powered by Hamilton’s H-10 automatic movement with an 80-hour power reserve, allowing the watch to rest for extended periods while remaining ready to wear. A Nivachron™ balance spring supports stability against external influences.
Sapphire crystals with anti-reflective coating and stainless steel cases underline the balance between sophistication and mechanics, while a 5 bar (50m) water resistance rating across the collection supports daily wear.
Why it matters
The Hamilton Jazzmaster Open Heart brings the mechanics of Swiss watchmaking to the forefront, aligning traditional craft with a contemporary, design-led presentation. For clients who value visible movement and thoughtful detailing, it offers a versatile companion for formal occasions and everyday life, with the H-10 calibre quietly in motion on the wrist.
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