Hamilton Jazzmaster Open Heart Auto Silver Dial Watch, 40mm,Introducing: New Sizes And Colours For The Hamilton Jazzmaster Open Heart,Jazzmaster Open Heart Auto,Amazon.com: Hamilton Watch Jazzmaster Open Heart Auto | Swiss Made | 40mm Stainless Steel Case | Silver Dial Analog Watch | Blue Leather Strap (Model: ,Amazon.com: Hamilton Watch Jazzmaster Open Heart Auto | Swiss Made | 40mm Stainless Steel Case | Silver Dial Analog Watch | Blue Leather Strap (Model: