Breitling Ref. 1810

BREITLING REF. 1810, NAVITIMER Breitling Genève, "Navitimer Chrono-Matic," Ref. 1810. No. 1317339. Made in the 1970's. Fine and large, self-winding, water-resistant, stainless steel wristwatch with round button chronograph, registers, telemeter, slide rule and date, winding crown at 9 and the chronograph pushbuttons at 2 and 4 o'clock with a stainless steel NSA bracelet signed Breitling. Three-body, polished, nudged black bezel, screwed-down case back, lapidated lugs. Bicolor black and silver with painted luminous baton and Arabic numeral idexes, subsidiary 30-minute and 12-hour register dials, outer graduation for the minutes, the telemeter and the slide rule, aperture for the date. Luminous baton hands. Cal. 12, gilt, 17 jewels, straightline lever escapement, monometallic balance, steel flat balance spring, micro-rotor. Dial, case and movement signed. Notes DIAM. 49 mm. THICKNESS 15 mm. Approx overall length 180 mm.