Striking and sophisticated, the Jazzmaster Open Heart Lady Auto 36mm features a bronze sunray-brushed dial that transitions seamlessly into deep navy, framing the indexes with bold elegance. The signature open-heart design reveals the movement within, while a sleek stainless steel bracelet adds a modern, refined finish. A classic dress watch that blends artistry and precision in perfect harmony.JAZZMASTER Striking a perfect balance between tradition and sophistication, the Jazzmaster collection offers wearers the ideal timepiece for milestone moments, and beyond. SELF-WINDING Wrist movements cause the inner rotor to swing, transferring energy to the mainspring, and powering your timepiece. SUPER-LUMINOVA® Super-LumiNova is a type of luminescent material applied to hands, dials and bezels to make them visible in the dark. STAINLESS STEEL CASE A highly resistant alloy composed of steel and chromium. It can be worked to resemble a precious metal. It is nearly impervious to rust, tarnish, and corrosion. SAPPHIRE CRYSTAL Synthetic sapphire crystal is a tough scratch-resistant material, only diamonds could leave a mark. NIVACHRON™ BALANCE SPRING Nivachron™ is an alloy used to produce balance spring to resist magnetic fields and improve accuracy. It reduces the effects of magnets, temperature, and shocks. H-10 CALIBER A three-hand automatic movement boasting a superior power reserve of 80 hours and featuring a Nivachron™ balance spring.