A 1966 Breitling Navitimer reference 806 wristwatch, produced for the AOPA. A black dial with calibrated scales surrounding, used as a base speed/time measurement for pilots to perform in flight calculations. The outer rotating ''slide rule'' bezel is used as a logarithmic scale to read the measurements, using the dial as the constant. The dial has 3 subsidiary dials, including a subsidiary seconds to 9 o''clock, a 12 hour chrono counter to 6 o''clock and a 30 minute counter to 3 o''clock. The hours and minutes are marked with extended lume batons, with 12 shown seperately. The dial is signed with the AOPA logo, showing this watch was supplied to a member of the Aircraft Owners and Pilots Association of America. The stainless steel case is in excellent condition, showing hardly any signs of wear or damage - quite unusual for a watch of this size from this period. The rotating bezel is notched to the edge, designed for tactility during use. Each lug shows a light champfer to the cen...