Hamilton

Open Heart Auto

Reference Number :

H32675650

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 magic to a watch that isn't afraid to show its true self. The Jazzmaster Open Heart is exactly that—a confident display of the beautiful complexity that usually ticks away hidden from sight. That carefully executed cutaway on the dial is more than just a design choice; it's a conversation starter, a constant, kinetic reminder of the living machine on your wrist. Following the sweep of the blued hands is one thing, but watching the balance wheel and escapement dance beneath them is another experience entirely. It’s powered by the H-10 caliber, a true workhorse with an impressive 80-hour power reserve, meaning this piece of art can be set down on Friday and will still be faithfully ticking for you on Monday. The combination of the crisp silver dial, the vibrant blue of the hands and leather strap, and that mesmerizing open heart creates a watch that’s both intellectually fascinating and aesthetically stunning. It’s a timepiece for someone who values transparency, both in design and in life.

DescriptionThe Hamilton Jazzmaster Open Heart Auto, designated by the reference number H32675650, is engineered with a stainless steel case that measures 40mm in diameter and has a thickness of 11.05mm. This case construction provides water resistance rated to 5 bar, which corresponds to 50 meters or 73 pounds per square inch, ensuring durability against incidental exposure to moisture. A key feature is the sapphire crystal that covers the dial; this material offers superior scratch resistance and is enhanced with an anti-reflection coating to maintain optimal visibility. The case further incorporates an open case back, providing a secondary view of the intricate movement within. For strap integration, the design specifies a lug width of 20mm.

At the core of this timepiece is the Hamilton Caliber H-10, a self-winding automatic movement. A notable attribute of this caliber is its substantial 80-hour power reserve, allowing the watch to maintain function for over three days without being wound. The H-10 movement also integrates a Nivachron balance spring, a modern alloy that offers significant resistance to magnetism and temperature fluctuations, thereby improving the watch's overall timekeeping stability and reliability. The silver dial is distinguished by its unique open-heart design, which provides a direct view of the movement's escapement in action. The watch is fitted with a blue cow leather strap (reference H6003261221) that is secured by a traditional pin buckle, which has a width of 18mm.

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