Jaeger-LeCoultre Reverso

The icon, and one of the most recognizable watches ever made. JLC created the Reverso in 1931 with an Art Deco rectangular case that slides and flips 180 degrees in its cradle, originally so polo players could turn the solid metal back outward and protect the crystal during a match. That swivel is now used for a second dial, an engraving, or a second time zone. The line runs from the faithful Reverso Classic and vintage-styled Tribute to the dual-dial Duoface and the narrower women's Reverso One. Nearly a century on, nothing else looks or works like it.