Hamilton Jazzmaster Automatic Mens Watch, 42 Stainless Steel

Product Overview

The Hamilton Jazzmaster Automatic Men’s Watch is a testament to Swiss watchmaking excellence, blending refined aesthetics with dependable mechanical performance. At its core lies the in-house H-10 automatic movement, a self-winding caliber engineered for precision and longevity. Housed within a 42mm stainless steel case, the watch features a captivating midnight blue dial that draws inspiration from both modern urban design and the vastness of the night sky. A distinctive open-heart aperture on the dial offers a direct view into the intricate workings of the movement, celebrating the artistry behind every component. This design choice not only enhances visual appeal but also reflects Hamilton’s commitment to transparency and craftsmanship. The deep blue tone of the dial is matched by a genuine leather strap in the same rich hue, creating a cohesive and elegant look. Secured with a stainless steel buckle, the strap ensures a comfortable and secure fit throughout the day. Whether worn during a business presentation or a dinner engagement, this timepiece delivers a confident presence on the wrist.

Key Features

• Midnight Blue Dial with Open Heart Design: The dial’s deep blue finish is accentuated by a cutaway section that reveals the oscillating rotor and balance wheel of the H-10 movement. This dynamic display transforms timekeeping into a visual experience, highlighting the mechanical precision that powers the watch.
• Swiss-Made H-10 Automatic Movement: Developed and manufactured by Hamilton, the H-10 caliber is a modern automatic movement known for its reliability and extended functionality. With a power reserve of 80 hours, the watch continues to operate for over three days without being worn, making it ideal for those who don’t wear their watch daily.
• Nivachron Balance Spring: This advanced alloy, developed in collaboration with Nivarox-FAR, resists magnetic fields commonly encountered in everyday environments—such as smartphones, laptops, and speakers—helping maintain consistent accuracy over time.
• Sapphire Crystal: The front crystal is made from scratch-resistant sapphire, offering exceptional clarity and long-term durability. It protects the dial from minor impacts and abrasions while preserving legibility in various lighting conditions.
• 50 Meters Water Resistance: Rated for 50 meters (5 ATM), the watch can withstand splashes, rain, and accidental immersion—such as washing hands or walking in the rain. However, it is not suitable for swimming, showering, or water sports.
• Genuine Blue Leather Strap: Crafted from high-quality leather, the strap complements the dial’s color and provides a soft, comfortable feel against the skin. The stainless steel buckle ensures a secure closure and adds a polished finish to the overall design.

Technical Specifications

• Case Material: Stainless Steel
• Case Diameter: 42mm
• Dial Color: Midnight Blue
• Movement: H-10 Automatic (Swiss Made)
• Power Reserve: 80 Hours
• Balance Spring: Nivachron
• Crystal: Sapphire
• Water Resistance: 50 Meters (5 ATM)
• Strap Material: Leather
• Strap Color: Blue
• Model Number: H32705640
• ASIN: B0FDKBJCLB
• Package Dimensions: 8.78 x 5.94 x 4.72 inches
• Item Weight: 1.43 Pounds
• Department: Men’s
• Manufacturer: Hamilton Watch
• Date First Available: April 16, 2026

Benefits & Use Cases

Designed for the discerning man who values both style and substance, the Jazzmaster Automatic excels in versatility. Its 42mm case strikes a balance between presence and wearability, fitting comfortably on most wrist sizes while maintaining a bold, contemporary profile. The open-heart dial appeals to those who appreciate mechanical complexity, offering a window into the watch’s inner workings without compromising elegance. The H-10 movement’s extended power reserve means the watch remains accurate even after weekends away from the wrist, reducing the need for frequent adjustments. Thanks to the Nivachron balance spring, daily exposure to magnetic fields—common in urban environments—has minimal impact on performance. The sapphire crystal ensures the dial stays pristine, while the leather strap ages gracefully, developing a unique patina over time. Ideal for professionals, travelers, and watch enthusiasts alike, this timepiece transitions effortlessly from boardroom meetings to evening gatherings.

Important Notes

This watch is water resistant to 50 meters, suitable for everyday moisture exposure but not intended for submersion during swimming or showering. Avoid contact with strong magnetic sources, extreme temperatures, and harsh chemicals such as perfumes or cleaning agents. To maintain optimal performance and appearance, follow the care guidelines provided in the official documentation. The manufacturer’s warranty is available upon request through Hamilton’s customer service. The package includes the watch, presentation box, and warranty card. For authenticity and reliable after-sales support, always purchase from authorized Hamilton retailers.