Hamilton

Open Heart Auto

Reference Number :

H32705551

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 the Jazzmaster Open Heart that other watches just can't replicate. It's not a skeleton watch screaming for attention, but rather a master of the subtle reveal. That silver dial is crisp and clean, but the carefully executed cutouts offer a tantalizing glimpse into the soul of the machine. You can see the rhythmic pulse of the balance wheel, a constant reminder of the life ticking away on your wrist. It's powered by the H-10 caliber, a true workhorse with an impressive 80-hour power reserve, meaning you can set it down for a long weekend and it'll still be ready to go. The 42mm case has a confident presence without being overbearing, and the calf leather strap feels like it was made just for you. It is a conversation starter that does not shout, but rather invites you and others to lean in and appreciate the artistry of a mechanical heart beating in plain sight.

DescriptionThe Hamilton Jazzmaster Open Heart, reference H32705551, is constructed with a stainless steel case measuring 42mm in diameter and a thickness of 11.44mm. Its architecture includes a 22mm lug width for the attachment of its designated strap. Protecting the dial is a sapphire crystal that incorporates an anti-reflective coating to ensure maximum legibility under various lighting conditions. An open case back offers an unobstructed view of the internal mechanism at work. The silver dial features a signature open-heart design, providing a partial exposition of the movement's balance wheel and escapement. Water resistance is rated to 5 bar, equivalent to 50 meters or 73 psi, making the timepiece suitable for handling splashes and brief, shallow water immersion.

Powering the timepiece is the Caliber H-10 automatic movement, a self-winding three-hand mechanism engineered to provide a substantial power reserve of 80 hours. This extended operational capacity significantly surpasses many standard automatic movements. The H-10 caliber is distinguished by its intricate decorative finishes, such as contrasting snail and pearled patterns, which are made visible through the dial's precise apertures. The watch is secured to the wrist by a calf leather strap, identified by the reference H6004251021. This strap tapers to a buckle width of 20mm and is fastened with a stainless steel folding clasp, ensuring a secure and comfortable fit on the wrist.

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