Rolex Cosmograph Daytona 116520

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Rolex Cosmograph Daytona 116520 runs on its exclusive chronograph movement that encompass only 290 components which is much fewer than other chronograph movements to achieve the same level of precision and accuracy.

It also uses its blue PARACHROM hairspring that is a Rolex patented invention. This hairspring has the ability to absorb shocks and resist magnetic field interruptions. It also has a power reserve of up to 72 hours and this perpetual rotor is invented and patented in 1931 that allows easy movements to trigger the watch to run continuously. The movement is also COSC certified undergoing 15 days and 15 nights of rigorous testing in five different positions and subjected to three different temperatures.

Rolex Cosmograph Daytona 116520

The chronograph allows measuring of elapsed time and calculate average speed. The seconds subdial at 3, minutes subdial at 6, and the hour subdial at 9. There are 2 push buttons to control the chronograph with one as start-stop and the other as reset. These buttons makes a "click" sound whenever it is pressed. It has a graduated tachometer with sweep second to provide it with its tachymeter function.

It uses a Triplock winding crown that is screwed down with 3 separate gaskets to seal out water. Together with the Oyster case it provides waterproof capability of up to 100 meters or 330 feet. It also can take up pressures of up to 500 bars or half a ton per centimeter.

Its stainless steel alloy case in 40mm diameter is made from 904L specification and can withstand corrosion and harsh environment of the sea. The other types of case are gold and platinum. All these case are made from a single solid block requiring 150 production processes.

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