Hamilton

Open Heart Auto

Reference Number :

H32705151

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 TakeSome watches quietly tell the time, but the Jazzmaster Open Heart shouts its mechanical prowess from the rooftops. It’s for the person who isn’t just on time, but is fascinated by the very nature of it. The dial isn't just a dial; it’s a stage where the H-10 movement performs a non-stop show, with its balance wheel and escapement taking center stage. You find yourself getting lost in the rhythm, a tiny, intricate engine humming away on your wrist. The 42mm case size gives it a modern, confident feel, while the solid steel bracelet makes it a true daily companion. It’s got the heart of a precision instrument and the soul of a piece of kinetic sculpture. Leaving it on your dresser for a few days is no issue, as the impressive 80-hour power reserve ensures it’s still ticking and ready for its next wrist-time performance when you are.

DescriptionA stainless steel case with a diameter of 42mm and a total thickness of 11.44mm forms the primary housing for the Hamilton Jazzmaster Open Heart, reference H32705151. The structural integrity of the case allows for a water resistance rating of 5 bar, which translates to 50 meters or 73 psi. Attached to the case is a stainless steel bracelet with a lug width measurement of 22mm. The dial is protected by a sapphire crystal that has been treated with an anti-reflection coating to ensure maximum legibility. An open case back, also fitted with a sapphire crystal, permits an unobstructed view of the internal mechanism, complementing the dial-side apertures.

Powering the timepiece is the Caliber H-10, an automatic three-hand movement renowned for its extended 80-hour power reserve. This specific caliber is distinguished by its elaborate decorative finishes, including contrasting snail and pearled patterns that are visible through the watch's signature open-heart design on its silver-colored dial. The watch is secured to the wrist by its stainless steel bracelet, strap reference H6054251011, which terminates in a 20mm wide folding clasp. This combination of mechanical functionality and detailed finishing is central to the watch's technical profile.

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