Hamilton Jazzmaster Power Reserve Auto 42mm Watch hide-price The open caseback proudly displays

The open caseback proudly displays the fine Swiss made 26-jewel automatic movement

Movement: At the heart of this timepiece is the self-winding mechanical movement

Designed as a tribute to the rewarding partnership between OMEGA and the GoodPlanet Foundation

a hallmark of Longines' watches

Hamilton Jazzmaster Power Reserve Auto 42mm Watch hide-price The open caseback proudly displaysWhen tradition meets innovation, the results are rarely so harmonious. The Jazzmaster Power Reserve uses simple design outside to balance the strength of the new H 13 movement inside. Only the power reserve scale hints at the stamina of the 80 hour reserve this model offers. For the Jazzmaster Power Reserve, Hamilton created the new H 13 movement with extended 80 hour power reserve, which is displayed on the dial through the power reserve indicator.