The Hamilton Jazzmaster Open Heart Automatic 42mm is an elegant Swiss-made mechanical watch that combines timeless design, sophisticated finishing, and a captivating view of its movement through a beautifully executed open-heart dial.
This example is offered in brand-new condition with an authorized-dealer manufacturer’s warranty, featuring a striking silver dial with contrasting blue hands and hour markers, a polished stainless steel case, and a matching blue leather strap.
At the heart of this exceptional timepiece is Hamilton’s celebrated H-10 automatic movement, delivering an impressive 80-hour power reserve and the precision of Swiss mechanical watchmaking.
A Beautifully Crafted Open-Heart Dial
The centerpiece of the Jazzmaster Open Heart is its distinctive silver dial with carefully positioned cutouts, offering a fascinating view of the mechanical movement beneath the surface.
Unlike traditional closed-dial watches, the open-heart construction reveals portions of the movement in action, creating a captivating visual experience that celebrates the art of mechanical watchmaking.
The silver dial is beautifully complemented by blue hands and matching blue hour markers, creating a refined contrast that enhances readability and adds a sophisticated touch of color.
The combination of the partially exposed movement, elegant dial finishing, and carefully balanced proportions makes the Jazzmaster Open Heart a distinctive choice for enthusiasts who appreciate traditional mechanical craftsmanship.
Refined 42mm Stainless Steel Case
The watch is housed in a beautifully proportioned 42mm stainless steel case, measuring 11.44mm thick and 50mm lug-to-lug.
Its elegant case architecture features smooth, polished surfaces and a classic round profile, creating a sophisticated appearance suitable for both everyday and formal occasions.
Protecting the dial is a scratch-resistant sapphire crystal, while a transparent exhibition caseback provides an additional view of the Swiss automatic movement.
With 50 meters / 164 feet of water resistance, the Jazzmaster offers practical protection against everyday splashes and incidental water exposure.
Swiss H-10 Automatic Movement – 80-Hour Power Reserve
Powering the Jazzmaster Open Heart is the renowned Hamilton H-10 Swiss automatic mechanical movement, engineered to provide dependable performance and an extended 80-hour power reserve.
This impressive power reserve allows the watch to continue running for more than three days when fully wound, making it especially convenient for collectors who rotate between multiple timepieces.
The movement features a Nivachron™ balance spring, designed to improve resistance to magnetic fields and temperature variations.
The open-heart dial provides a captivating glimpse of the movement in operation, while the exhibition caseback reveals additional mechanical details.
The result is an exceptional combination of traditional Swiss watchmaking, modern movement technology, and refined aesthetics.
Elegant Blue Leather Strap
Completing the watch is a beautiful blue genuine leather strap, perfectly coordinated with the blue hands and hour markers.
The strap measures 22mm at the lugs and features a refined texture and comfortable construction suitable for extended wear.
A stainless steel folding clasp provides a secure fit while maintaining the watch’s elegant appearance.
The combination of the silver dial, blue accents, polished stainless steel case, and matching leather strap creates a sophisticated and versatile timepiece.
Specifications
Case
- Stainless Steel
- 42mm Case Diameter
- 11.44mm Case Thickness
- 50mm Lug-to-Lug
- 22mm Lug Width
- Classic Round Case Construction
- Polished Stainless Steel Finishing
- Fixed Stainless Steel Bezel
- Sapphire Exhibition Caseback
- Water Resistance: 50 Meters / 164 Feet / 5 ATM
- Swiss Made
Dial
- Silver Open-Heart Dial
- Partially Exposed Mechanical Movement
- Distinctive Open-Heart Cutout Design
- Contrasting Blue Hour Markers
- Elegant Blue Hour and Minute Hands
- Central Seconds Hand
- Refined Dial Finishing
- Classic Analog Display
- No-Date Configuration
Crystal
- Scratch-Resistant Sapphire Crystal
- Excellent Dial Visibility
- Transparent Exhibition Caseback
- View of the Swiss Mechanical Movement
Movement
- Hamilton Caliber H-10
- Swiss Automatic Mechanical Movement
- 80-Hour Power Reserve
- Self-Winding
- Manual Winding Capability
- Nivachron™ Balance Spring
- Hours, Minutes and Central Seconds
- Traditional Mechanical Construction
- Visible Through Open-Heart Dial
- Visible Through Exhibition Caseback
- Swiss Made
Strap
- Blue Genuine Cow Leather Strap
- Hamilton Strap Reference: H6903261181
- 22mm Lug Width
- 20mm Buckle Width
- Stainless Steel Folding Clasp
- Comfortable Leather Construction
- Color Coordinated with Dial Accents
- Elegant Dress and Everyday Styling
Features
- Swiss Automatic Mechanical Movement
- Hamilton H-10 Caliber
- 80-Hour Power Reserve
- Nivachron™ Balance Spring
- Silver Open-Heart Dial
- Visible Mechanical Movement
- Blue Hands and Hour Markers
- 42mm Stainless Steel Case
- Polished Stainless Steel Finishing
- Scratch-Resistant Sapphire Crystal
- Sapphire Exhibition Caseback
- Blue Genuine Leather Strap
- Stainless Steel Folding Clasp
- 50M / 5 ATM Water Resistance
- Swiss Made
- Brand-New Condition
- Authorized Dealer – Hamilton International Manufacturer’s Warranty
Additional Information
- Brand: Hamilton
- Collection: Jazzmaster
- Model: Jazzmaster Open Heart Automatic
- Reference: H32705651
- Dial Color: Silver
- Dial Design: Open Heart / Partially Exposed Movement
- Hands and Markers: Blue
- Case Material: Stainless Steel
- Case Diameter: 42mm
- Case Thickness: 11.44mm
- Lug-to-Lug: 50mm
- Lug Width: 22mm
- Movement: Hamilton H-10
- Movement Type: Swiss Automatic
- Power Reserve: 80 Hours
- Balance Spring: Nivachron™
- Crystal: Sapphire
- Caseback: Exhibition / Transparent
- Strap: Blue Genuine Leather
- Strap Reference: H6903261181
- Clasp: Stainless Steel Folding Clasp
- Water Resistance: 50M / 164 Feet / 5 ATM
- Condition: Brand New
- Warranty: Hamilton 2-Year International Manufacturer’s Warranty – Authorized Dealer
- Country of Manufacture: Switzerland
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