BREITLING (Chronomètre Poche / Tracking Timer 1/10 de seconde), vers 1970

Pilot's sports chronometer (60-second graduations) in chrome alloy with steel clipped back.

Matte white dial with checkerboard roller counter: 15-minute totalizer and large blackened steel chronometer hand. Chrono release at 12 o'clock on the clasp. Some of these chronographs were used during famous car races such as Le Mans.

Movement: Mechanical manual winding calibre signed BREITLING / BF411 Swiss