Breitling caliber Caliber 13

Breitling's bread & butter, tried & tested chronograph movement. Based on Valjoux / ETA 7750. Versions with both date as well as day & date exist; most of the B13 however only display the date. Automatic chronograph, supplied by either ETA or Sellita, enabling you to measure elapsed times on a 6-9-12 counter display.