The Salon International de la Haute Horlogerie in Geneva (Jan. 17–21) is a mecca of high watchmaking. Here’s what five exhibitors have in store:1. MontblancThe Vintage Pulsographe evokes a time when doctors used watches to measure vital signs. (EUR 33,000; montblanc.com)2. IWC Party invites touting “A Night in Portofino” suggest that a new Portofino collection will be unveiled. 3. CartierThe brand is tight-lipped about its 2011 plans, but the Calibre, a 2010 line featuring a new in-house movement, is one to watch.4. PaneraiThe Luminor Marina 1950 3 Days Automatic Composite features a synthetic ceramic. (Price on request; panerai.com)5. Vacheron Constantin New for 2011: The Quai de l’Ile Annual Calendar Retrograde has a customizable case, bezel, and crown.