Technical Specs 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. The movement is tastefully decorated and visible through the see-through case back. CONTACT OUR SALES TEAM (905) 458-5588 FOR INFORMATION REGARDING OUR PRICE MATCH GUARANTEE DESIGN When 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.