Manually wound mechanical movement
Steel case, 48 mm. diameter with rotating aluminum bezel.
Black dial with "Big Eye" white silver subdials: 30 minutes at 3, 12 hours at 6, and small seconds at 9. Red inserts on both, the chronograph counters and the slide rule. 'Twin jet' logo at noon. Luminous stick hands, red chronometric sweep, rabbit ear sub-dial hands
Breitling signed crown. Steel case back with screw closure.
Steel bracelet with folding clasp
Production period from 1968 to 1978