The Art Deco style meets the classic American style with the new Hamilton Boulton Mechanical. The peculiar shape of the case makes the Boulton a true staple of the Hamilton collection since its first appearance in 1940. Reinterpreted in a perfect version for the 21st century and powered by the extraordinary H-50 manual winding movement, it best embodies the American spirit from Hamilton. The H-50 is an exclusive caliber specially developed for our manual winding watches. The H-50 is available with or without a date function and has an extended power reserve of up to 80 hours, ensuring maximum reliability even when the watch is not worn for a few days.