Oysterdate Big Block 79180

Later Big Block automaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist. chronographChronographA watch function for starting, stopping and resetting an elapsed-time measurement independently of the ordinary time display. with a steel tachymeterTachymeterA chronograph scale that converts the time taken to travel a known distance into average speed. The distance and scale units must correspond. bezelBezelThe frame surrounding the crystal at the front of a watch. and Valjoux 7750 movement.