“The Temperature During this laboratory is held at 21°C as well as the humidity at 45 per cent,” clarifies Sylvain Jeanneret, the man who heads up the 8-robust workforce for the Patek Philippe lab in Neuchâtel, from driving his white mask, which is just one part of his head-to-toe masking. https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/