IWC Watch Pilots Watch Automatic 41 Top Gun Lake Tahoe IW328104. The Pilot’s Watch Automatic 41 TOP GUN Lake Tahoe features a 41-millimetre case made of striking white ceramic. The ceramic colour Lake Tahoe is inspired by the winter landscape around Lake Tahoe, a mountainous area frequently used as a training ground by aviators from the nearby Strike Fighter Tactics Instructor Program (SFTI) The distinctive and subdued white shade has established itself as one of IWC Schaffhausen’s most emblematic ceramic colours. White ceramic is manufactured in a complex process by mixing zirconium oxide with other metallic oxides in a precisely defined mixing ratio.