H32215170 Hamilton Jazzmaster Open Heart Lady Auto Watch Automatic three-hand watch, with visible watch movement. 36mm steel case, with sapphire crystal. Transparent caseback. The 36mm Jazzmaster Open Heart demonstrates a perfect balance between classic looks and innovative craftsmanship. Inspired by the freshness of blooming flowers, this stainless steel version features a precisely cutwork-patterned dial embellished with subtle pink for a shimmering, feminine look. H-10 caliber. The H-10 is a three-hand automatic movement that can include a date function. With a power reserve of 80 hours and, in some parts, a regulating spring made of the advanced Nivachron antimagnetic alloy, it maintains the constancy and precision of time in the watches in our collections.