The Hamilton Jazzmaster Open Heart Auto has a sleek design and is part of the renowned Jazzmaster series. Its stainless steel case boasts a diameter of 42 mm and a height of 11.44 mm, along with water resistance up to 50 meters. Protecting the watch face is a sapphire crystal, which features an anti-reflective coating, while the transparent case back allows a glimpse into the intricate movement.

The striking green dial showcases a gradient finish and features the collection's hallmark open-heart design that exposes part of the balance assembly. Hour markers and hands are meticulously crafted for optimal visibility. At its core, the watch employs the Hamilton H-10 automatic movement, which operates at a frequency of 28,800 vibrations per hour, providing an impressive 80-hour power reserve. This movement is enhanced with a Nivachron balance spring, ensuring greater resistance to magnetic influences, temperature shifts, and shocks. Completing its sophisticated look is a stainless steel bracelet with a secure folding clasp.