OMEGA 435.13.40.22.01.001 DE VILLE TRÉSOR 40 mm, steel on leather strapProduct Overview The "Trsor" collection, characterized by its elegant thin case, features the legendary 30mm caliber first introduced in 1949. Even after more than half a century, this caliber is recognized as one of the most advanced mechanical movements. This 40mm polished stainless steel case comes with a black leather strap. The black dome shaped dial includes 18K white gold hands and indexes, a small seconds at 6 o'clock, and a power reserve