Hamilton

Open Heart Auto

Reference Number :

H32705142

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 to a watch that isn't afraid to show its soul. The Jazzmaster Open Heart doesn't just tell you the time; it invites you into the conversation of how time is kept. That stunning blue dial, with its carefully executed cutouts, is like a stage where the balance wheel and escapement perform their constant, rhythmic dance. It's a piece that respects tradition but isn't bound by it. You get the robust, weekend-proof 80-hour power reserve of the H-10 movement—a truly modern convenience—paired with a visual that is pure mechanical theater. It’s for the person who appreciates the engineering but also wants a watch with personality. It feels less like a sterile instrument and more like a dynamic piece of art that just happens to be incredibly precise. Fastened with a solid steel bracelet, it has the heft and presence of a serious timepiece, yet the dial’s performance keeps it from ever feeling too stuffy or conventional.

DescriptionThe Hamilton Jazzmaster Open Heart, reference H32705142, is constructed with a stainless steel case measuring 42mm in diameter and 11.44mm in thickness. Its architecture includes a 22mm lug width, ensuring a substantial presence on the wrist. The watch face is protected by a sapphire crystal, enhanced with an anti-reflective coating to guarantee clarity under various lighting conditions. An open case back provides a secondary view of the internal mechanism. The case is engineered for water resistance up to 5 bar, which is equivalent to 50 meters or 73 psi, making it suitable for daily wear and resistant to incidental water exposure. The overall design integrity is maintained through precision manufacturing and material selection focused on durability and aesthetic appeal.

Powering this timepiece is the Hamilton Caliber H-10, an automatic three-hand movement. This caliber is distinguished by its extended power reserve of 80 hours, a significant technical advantage. The movement's visibility is a key feature, with intricate contrasting snail and pearled patterns visible through the dial's apertures and the transparent case back. The dial itself is a deep blue, providing a rich background for the polished hands and indices. The watch is secured to the wrist with a stainless steel bracelet (reference H6054251011) that integrates seamlessly with the case. This bracelet features a 20mm folding clasp, offering both security and ease of use. The entire assembly represents a cohesive blend of mechanical function and sophisticated design.

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