In the new 181° watch, Zeitwinkel has made some changes to their original design. It now has a small second display and a date display at the "3" position, in addition to the hour and minute indicators. The watch runs on the ZW0102 caliber, a 72-hour power reserve movement made in-house by Zeitwinkel. The numerals on the dial have their unique "Zeitwinkel" font. The watch is a bit bigger than the 188°, with a 42.5mm case. You can choose from three different dial options - blue, black, or silver. This particular model has a sleek stainless steel case and a black alligator leather strap.