Ref. no. B 13050.1 Special Chronomat...complete with the original steel aviator strap, which features an extra quartz watch...the UTC module. Marked "Breitling", automatic movement based on the ETA 7750. Recently serviced...the deviation is approx. 1 second per 24 hours (on the testing device). With built-in chronograph function, which works flawlessly. (seconds, minutes, hours). Dark blue dial in mint condition...overlaid gold log. Quickset date (first pull-out position). Screwed gold, original crown...gold pushers for the chronograph. The diver's bezel has 4 gold markers...typical Breitling design. The Breitling screwed lid with ref. and production no. 54727 Diameter: approx. 41 mm. Few signs of wear. Tempered sapphire crystal without signs of wear (blue glow). Complete with the original, numbered aviator strap... Ref. 15096 and serial no. 307A + the original folding clasp. Suited for wrists of up to approx. 18 cm in circumference. You can purchase neutral 2 cm extension pieces from any jeweller. The second movement is inside the strap...the UTC model, marked with ref. B61072 In short, a men's watch that will retains its value, by a widely known brand. Lots of extra photos to provide a good impression of this fine watch. Now sold reliably, with... 3 MONTHS WARRANTY!