The Hamilton Jazzmaster Open Heart Auto H32705180 is a 42mm stainless steel watch featuring a black sunray-brushed dial with an open-heart aperture, allowing a view of the automatic movement. It is powered by the H-10 caliber, offering an 80-hour power reserve and enhanced accuracy with a Nivachron balance spring. The watch includes a sapphire crystal with anti-reflective coating, a transparent case back, and is water-resistant up to 50 meters. The stainless steel bracelet is secured with a folding clasp. Reference number: H32705180.