“The Temperature Within this laboratory is retained at 21°C along with the humidity at 45 for each cent,” describes Sylvain Jeanneret, the man who heads up the 8-strong staff at the Patek Philippe lab in Neuchâtel, from powering his white mask, which is just one part of his head-to-toe masking. https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/