“The Temperature With this laboratory is held at 21°C and also the humidity at 45 per cent,” clarifies Sylvain Jeanneret, The person who heads up the eight-strong staff on the Patek Philippe lab in Neuchâtel, from behind his white mask, which is only one A part of his head-to-toe masking. https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/