A design from 1962, the Ultra-Thin OM3 Watch by Ole Mathiesen is the epitome of classic, mid-century sophistication. The 35mm steel case features a convex, sapphire crystal—a signature of Mathiesen’s watches. The Swiss quartz movement, uncluttered dial with Arabic numerals, and fine black leather strap of the Ultra-Thin OM3 Watch all contribute to a harmonious, timeless design.