The Vacheron Constantin Overseas Ultra-Thin Perpetual Calendar was introduced at SIHH 2016. It is powered by the automatic caliber 1120QP, which features a perpetual calendar. Reference 4300V/120G-B946 was added to the collection in 2021. It is powered by the skeletonized caliber 1120 QP SQ, which is housed in a White Gold case. It comes with a bracelet plus both a rubber as well as an alligator strap.
