Spirit Pilot 39mm Flyback Chronometer

From the retailer listing

A modern classic inspired by legendary aviators The Longines Spirit collection continues to soar with a more streamlined new dial aesthetic, newly revised case proportions, and the continued aim of yielding a classic, but function-forward modern aviator's watch powered by Longines' own state-of-the-art movement technology. Proof that the pioneering spirit is still, and always, alive and well at the winged hourglass brand. Linking history with innovation, the Longines Spirit Pilot Flyback Chronograph combines elements borrowed from the pioneering world of aviation with today’s aesthetic and technical requirements. The polished, satin-finished stainless steel case is topped with a rotating ceramic bezel, and now measures 39.5 mm in diameter, and only 13mm thick. It houses Longines' own Calibre L792 – a handwound flyback chronograph with a silicon balance-spring. It is certified by COSC, ma