First define a "Pilot's Watch". The Rolex GMT Master was designed for PanAm pilots in the 1950s per my understanding and Citizen makes some very complex face watches labeled as for aviators currently. So what makes a pilots watch as to features etc? A WW2 military pilot's watch had to have a "Hack" feature so it could be set to an exact time. How about today where virtually all watches have the hack setting feature?