Hamilton

Open Heart Auto

Reference Number :

H32705141

Series : Jazzmaster

Retail: $1,195

(As of: 07/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Hamilton. If you are interested in selling this watch to us, you can contact us here.

Quick TakeThere's an undeniable allure to a watch that lets you see what makes it tick, and the Jazzmaster Open Heart turns this mechanical transparency into a true art form. The deep blue sunray dial acts as the perfect stage, with carefully executed cutouts that pull your eyes directly to the rhythmic pulse of the Swiss automatic movement inside. It's a constant, beautiful reminder of the complex engineering strapped to your wrist. This isn't just about telling time; it's about appreciating the craft. That impressive 80-hour power reserve, courtesy of the H-10 caliber, means you can set it down for a weekend and it'll still be ready to go on Monday. The solid feel of the 42mm steel case and the fluid lines of the bracelet make it a versatile piece that's as much a testament to robust design as it is to delicate mechanical artistry. It’s a watch for those who find beauty in motion and complexity.

DescriptionThe Hamilton Jazzmaster Open Heart, under the reference H32705141, features a case fabricated from stainless steel with a diameter of 42mm and a thickness of 11.44mm. A key design element is the inclusion of an open case back, which permits a direct view of the internal automatic movement. The dial is protected by a sapphire crystal, a material with superior scratch-resistant properties, which is further enhanced with an anti-reflection coating to maximize legibility. This timepiece is rated for a water resistance of 5 bar, equivalent to 50 meters or 164 feet, ensuring resilience against incidental contact with water. The case is engineered with a 22mm lug width to accommodate its bracelet. Its sunray blue dial is distinguished by strategically placed apertures that expose the intricate workings of the escapement and balance assembly.

Internally, the watch is driven by the Hamilton Caliber H-10, a self-winding three-hand movement. A significant technical attribute of this caliber is its extended 80-hour power reserve, offering more than three days of autonomous operation. The version of the H-10 utilized in this American Classic model is finished with intricate contrasting snail and pearled patterns, which are visible through both the dial cutouts and the exhibition case back. The watch is integrated with a stainless steel bracelet (strap reference H6054251011) that is secured with a folding clasp. The bracelet's design tapers to a buckle width of 20mm, contributing to a comfortable and balanced fit on the wrist.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size42 mm

MovementAutomatic

CaliberH-10

FunctionsHours, Minutes, Seconds

Power Reserve80 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal