Hamilton

Opean Heart

Reference Number :

H32705152

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 a certain magic in seeing a watch's heart beat, and the Jazzmaster Open Heart puts that spectacle front and center. It's not just a timepiece; it's a conversation starter that peels back the curtain on Swiss precision. The silver dial, with its dramatic cutouts, isn't shy about showing off the intricate dance of the H-10 automatic movement. You get to witness the escapement and balance wheel in constant motion, a visual reminder of the 80-hour power reserve ticking away reliably. Encased in a confident 42mm stainless steel body, it has a modern presence that still feels timeless, anchored by a solid steel bracelet that flows around the wrist. It is the perfect pick for the person who loves the 'how' as much as the 'what' – a little bit of engineering poetry for your everyday life, protected by a sapphire crystal and ready for whatever the day holds with its 50-meter water resistance.

DescriptionThe case construction of reference H32705152 utilizes stainless steel, machined to a diameter of 42mm and a thickness of 11.44mm. A sapphire crystal is fitted to the front, selected for its high resistance to scratching and abrasion, ensuring long-term clarity of the dial. Water resistance is certified to 5 bar, which corresponds to a static pressure at a depth of 50 meters or 73 pounds per square inch, rendering the watch protected against incidental water contact such as rain or splashes. An exhibition-style open case back, also fitted with a crystal, permits an unobstructed view of the internal mechanical components. The lug width measures a standard 22mm, designed to integrate seamlessly with the provided bracelet.

At the core of this watch operates the Hamilton Caliber H-10, an automatic, self-winding movement. Its primary functional advantage is an extended power reserve of 80 hours, a significant enhancement over typical mechanical movements. This is achieved through engineering refinements within the kinetic chain. The movement functions as a three-hand time-telling device. The silver dial is distinguished by its 'Open Heart' design, featuring strategically placed apertures that reveal the intricate, decorated workings of the escapement and balance wheel. These visible components of the Caliber H-10 are finished with detailed snail and pearled patterns. The stainless steel strap, identified by reference H6054251011, terminates in a butterfly clasp. This buckle mechanism provides a secure fit and maintains the continuous aesthetic of the bracelet, with a buckle width of 20mm.

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