Hamilton

Open Heart Auto

Reference Number :

H32675540

Series : Jazzmaster

Retail: $1,145

(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 a certain confidence to a watch that shows off its inner workings, and the Jazzmaster Open Heart has it in spades. It's like meeting someone who is unapologetically themselves. The dial isn't just a flat surface for telling time; it's a window into a tiny, living mechanical universe. Those deliberate, artistic cuts across the rich blue face give you a front-row seat to the constant, rhythmic dance of the escapement and balance assembly. It’s a brilliant move by Hamilton, turning the Caliber H-10 from a hidden engine into the star of the show. And what a star it is, packing an 80-hour power reserve that keeps it ticking through a long weekend. This watch feels like it was made for the curious, for the person who wants to see the gears turn and appreciate the complex engineering that makes it all possible. It’s a piece of kinetic art that bridges the gap between traditional watchmaking and modern design, all while sitting comfortably on your wrist.

DescriptionThe Hamilton Jazzmaster Open Heart Auto, under the reference H32675540, is engineered with a 40mm stainless steel case that possesses a measured thickness of 11.05mm. Its architecture provides water resistance rated to 5 bar, which translates to 50 meters or 73 pounds per square inch, ensuring durability against incidental water exposure. The dial is shielded by a sapphire crystal, enhanced with an anti-reflection treatment to guarantee optimal readability. Further utility is provided by an open case back, offering an unobstructed view of the movement's operation. The design specifies a lug width of 20mm for strap integration and utilizes a pin buckle system with an 18mm width.

Powering the timepiece is the Caliber H-10, a self-winding mechanical movement. This three-hand caliber is notable for its extended 80-hour power reserve and the incorporation of a Nivachron balance spring, which improves its performance against magnetic interference and thermal fluctuations. The Deep Blue dial is distinguished by its signature open-heart design, with precise cutouts that exhibit the intricate snail and pearled finishing of the movement components beneath. The watch is fitted with a brown cow leather strap, identified by reference H6003261211, and secured with a classic pin buckle, completing the technical profile of this distinct model from the Jazzmaster collection.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size40 mm

MovementAutomatic

CaliberH-10

FunctionsHours, Minutes, Seconds

Power Reserve80 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal