The Daytona’s case measures 40 mm in diameter and is made in Rolex’s distinctive Oyster style and has a water-resistance of 100 meters (330 feet). Its water resistance is helped by the use of a winding crown fitted with Rolex’s patented Triplock water-resistance system which screws down securely into the case. The fluted caseback is also (hermetically) screwed down with a special tool exclusive to Rolex watchmakers and the chronopushers also screw down too. A crown guard has been integrated into the case middle which has been machined entirely from a solid block of 950 platinum and has a polished finish and is complimented by a bracelet also in platinum.
One of the Daytona’s signature design elements is the tachymeter bezel which adds to its auto racing persona, used in conjunction with the chronograph it measures average speeds of up to 400 miles(or kilometers) per hour. The tachymeter has engraved numerals and graduations coated with a thin layer of platinum via a PVD, and Rolex’s proprietary Cerachrom material is an extra-hard, corrosion resistant ceramic – Cerachrom is a contraction of the words Ceramic and Chrome.
The “Ice blue ” dial is a colour reserved exclusively for platinum models in particular the Day-Date II. Contrasting the ice blue of the dial the outer scales on the chronograph subdials are made of chestnut brown lacquer which compliment the bezel, they have 18k white gold borders. White gold has also been used for the applied hour markers and hands which have a coating of Chromalight, a luminescent substance with a blue glow that Rolex claims lasts longer than eight hours.