Refined yet contemporary, the Hamilton Jazzmaster Open Heart Auto 40mm reveals the beauty of Swiss watchmaking through its striking open-heart design. Framed by a sophisticated silver-tone dial, the exposed movement offers a captivating view into the precision and artistry at the core of the timepiece. Blending timeless elegance with modern craftsmanship, this versatile watch embodies the understated luxury of the Jazzmaster collection. Powered by Hamilton’s H-10 automatic movement, it delivers an impressive 80 hour power reserve and enhanced reliability with a Nivachron™ balance spring. Case size: 40 mm and buckle width: 18 mm. Finished with a polished stainless steel bracelet, the Jazzmaster Open Heart Auto is designed for those who appreciate both technical excellence and refined style.