“The Temperature On this laboratory is retained at 21°C along with the humidity at 45 per cent,” points out Sylvain Jeanneret, the man who heads up the 8-solid team on the Patek Philippe lab in Neuchâtel, from powering his white mask, which is only one part of his head-to-toe masking. https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/