“The Temperature On this laboratory is retained at 21°C as well as humidity at forty five per cent,” clarifies Sylvain Jeanneret, the man who heads up the eight-robust team within the Patek Philippe lab in Neuchâtel, from behind his white mask, which is just one part of his head-to-toe masking. https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/