Zenith, El Primero Stratos Flyback, ref. 03.2067.405, steel chronograph watch with flybackMovement: cal. 405, automatic, 31 jewels, n°432067Case: n°238278, diam. 46 mm, unidirectional rotating bezel, glass back revealing the movementComponents: 2-counter chronograph with central seconds, in-flight feedback, telemeter graduation, date window, subsidiary seconds counterZenith strap: blue rubber with Zenith steel folding claspSignature: dial, movement, case