Hamilton

Open Heart

Reference Number :

H32705131

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 confidence that comes from wearing a watch that has nothing to hide. The Jazzmaster Open Heart doesn't just tell you the time; it shows you time being made. The dial isn't just a face, it's a window into a tiny, living machine. Watching the balance wheel oscillate through the artful cutout is mesmerizing, a constant reminder of the complexity ticking away on your wrist. This isn't just about looks, though. Underneath that expressive dial is the H-10 movement, a workhorse with an impressive 80-hour power reserve. You can set it down on Friday and it'll still be running perfectly on Monday morning. The solid 42mm stainless steel case and matching bracelet give it a substantial, reassuring presence that feels just right. It’s a piece that expertly balances sophisticated mechanics with a bold, contemporary design statement, perfect for the person who values both substance and style.

DescriptionThe Hamilton Jazzmaster, reference H32705131, is constructed with a stainless steel case that measures 42mm in diameter and has a thickness of 11.44mm. Its architecture includes a 22mm lug width, facilitating strap compatibility. Protecting the dial is a scratch-resistant sapphire crystal, which has been treated with an anti-reflective coating to ensure maximum clarity and reduce glare under various lighting conditions. The watch is engineered for a water resistance of up to 5 bar, which corresponds to a depth of 50 meters or a pressure of 73 psi. An open case back, also fitted with sapphire crystal, allows for an unobstructed view of the mechanical movement operating within, showcasing the intricate engineering and finishing of the caliber.

Internally, the timepiece is powered by the Caliber H-10, a self-winding automatic movement known for its reliability and extended performance. This three-hand mechanism provides a substantial power reserve of 80 hours, a significant increase over standard automatic movements. The H-10 is distinguished by its decorative finishes, featuring intricate contrasting snail and pearled patterns visible through the dial's apertures and the open case back. The black dial is precisely cut to reveal the moving escapement and balance wheel. The watch is secured to the wrist by a stainless steel bracelet (strap reference H6054251011) that integrates a folding clasp with a buckle width of 20mm, ensuring a secure and comfortable fit.

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