Very big news last year, in every possible sense of the word, was Vacheron Constantin’s launch of the ref. 57260 pocket watch, the most complicated watch in the world. It had myriad complications, many astronomical in orientation, and some quite unusual (including a lunisolar Hebraic perpetual calendar). For 2017, Vacheron Constantin has announced a new highly-complicated watch; this time, however, it’s a wristwatch, which focuses on astronomical indications in a very pure way. This is the Les Cabinotiers Celestia Astronomical Grand Complication, and it’s the most complicated wristwatch Vacheron has ever created.