The 40mm Hamilton Jazzmaster Open Heart highlights precision with its striking white cut-out dial, offering a glimpse into the intricate inner mechanics of the timepiece. At its core is the H-10-S automatic movement, featuring an 80-hour power reserve and Nivachron™ balance spring, ensuring both reliability and performance. This watch is paired with a sophisticated dark brown leather strap, complementing the stainless steel case. The Jazzmaster Open Heart exemplifies Hamilton's evolving craftsmanship and meticulous attention to detail, making it a refined choice for those who appreciate both form and function. • Powered by the automatic movement with a power reserve of up to 80 hours. • Presented on a brown leather strap with traditional buckle. • Scratch resistant sapphire crystal glass. • 40mm case width. • 50 metre water resistance.