rolexのインスタグラム(rolex) - 11月18日 00時30分

The Cosmograph Daytona is the ideal instrument for measuring average speeds of up to 400 km/h or mph. The calculation is performed over one kilometre or mile. The driver starts the chronograph when the car passes the starting point and stops it after the car has covered the fixed distance. The arrow-tipped centre hand points to the car’s average speed on the tachymetric scale.
#Rolex #CosmographDaytona #Perpetual

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