Hamilton H40505551 American Classic RailRoad AutoProduct Overview A classical three hand watch with tradition, signature style, and American spirit. From the good old days of railroad clocks to modern wristwatches. Equipped with the H 10 automatic movement featuring a standard power reserve of 80 hours, it boasts a bold dial design reminiscent of steam locomotive wheels. Specifications Product Number H40505551 Caliber H 10 Collection American Classic Movement Automatic Case Size 40mm Thickness (mm)