A tribute to the original Navitimer 1, this version is smaller in diameter featuring a black, blue or silver dial with tone-on-tone counters. The famous circular slide rule, powered by the bidirectional rotating bezel, can perform all airborne navigation operations. This legendary chronograph, also available in steel & gold, is equipped with a self-winding caliber and is chronometer-certified by the COSC, testament to its superior precision and reliability.