Hamilton

Open Heart Auto

Reference Number :

H32705560

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 honesty to the Jazzmaster Open Heart that you don't find in just any watch. It's not just telling you the time; it's showing you how. That deep green dial isn't merely a backdrop; it's a stage, and the stars of the show are the escapement and balance spring, performing their constant, hypnotic dance. Hamilton's designers knew exactly which parts of the mechanical soul to reveal, creating apertures that feel both deliberate and artistic. This isn't a full-blown skeleton watch that leaves nothing to the imagination. Instead, it's a tantalizing glimpse into a world of gears and jewels, a conversation starter that pulls you in. With an impressive 80-hour power reserve, it's a reliable partner that can rest all weekend and still be ticking perfectly on Monday morning. It wears its complexity with an easy-going confidence, blending sophisticated mechanics with a versatile design that feels just right with a leather jacket or a business suit.

DescriptionThe Hamilton Jazzmaster Open Heart, reference H32705560, is constructed with a 42mm diameter stainless steel case, which measures 11.44mm in thickness. Its architecture includes a 22mm lug width, providing a substantial presence on the wrist. The case is sealed to provide water resistance up to 5 bar, equivalent to 50 meters or 164 feet, making it suitable for everyday exposure to moisture but not for submersion. Protecting the dial is a scratch-resistant sapphire crystal that has been treated with an anti-reflective coating to ensure maximum legibility under various lighting conditions. An open case back, also fitted with sapphire crystal, allows for an unobstructed view of the movement's operation from the rear, complementing the dial-side apertures.

Powering the timepiece is the Hamilton Caliber H-10, an automatic three-hand movement. This caliber is engineered for longevity and reliability, offering a superior power reserve of 80 hours. A key feature of the H-10 is its use of a Nivachron balance spring, which provides enhanced resistance to magnetic fields, temperature variations, and shocks, thereby improving overall timekeeping stability. The movement's finishing, characterized by intricate contrasting snail and pearled patterns, is partially visible through the unique cutouts on the green dial. The watch is secured to the wrist with a brown calf leather strap (reference H6000002301) that terminates in a stainless steel pin buckle with a 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