Chronograph 7412

A steel manually wound Longines chronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display. reference, represented here by a medical-scale dial and calibreCaliberThe designation of a watch movement, identifying its design or movement family. 30CH. The reference and calibreCaliberThe designation of a watch movement, identifying its design or movement family. are catalogued separately.