BREITLING chronograph Navitimer Chrono-Matic reference 1806, self winding, Switzerland around 1970, screwed down steel case including original stainless steel bracelet with deployant clasp, original winding crown and pusher, bidirectional revolving slide rule bezel, black dial with silvered sub-dials, date at 6, calibre 11, 17 jewels, precision adjustment, diameter approx. 48,5 mm, length approx. 22 cm, needs to be overhauled, condition 2-3
