Revealing the beautiful inner workings of the automatic movement, this Hamilton Jazzmaster Open Heart Automatic Ladies Watch blends contemporary design with sophistication. At A Glance  Presented on a black leather strap 36mm case size with 50m water resistance Black sunray and skeleton dial displaying the inner workings of the watch Silver tone baton hour markers Scratch resistant sapphire crystal glass Powered by a Swiss automatic movement Power reserve of up to 80 hours