The Thinnest Calender Watch in the World! The Steinhausen Dunn Horitzon Watch includes a day-of-month digit display yet is just over 5 millimeters thick. It's so slim, in March of 2005, it was one of the premier attractions at the Art Basel in Switzerland (the most important annual art show worldwide for the past 34 years). Its Swiss quartz movement is superbly accurate and reliable. The Steinhausen Dunn Horitzon Watch is a combination of traditional first-rate quality, refined taste, and high stature that has come to be expected of Steinhausen timepieces. This watch is so thin you won't even notice it's strapped to your wrist. But you'll know you're wearing one of the most accurate watches ever made. This Steinhausen marvel has been engraved with a sapphire stone on its crown. It also has a handsome Steinhausen logo on its dial.