Rolex Oyster Perpetual Cosmograph Daytona Platinum

CERACHROM BEZEL FOR MEASURING SPEED A key part of the COSMOGRAPH DAYTONA's identity is its CERACHROM ceramic bezel with a tachymetric scale, making the watch the ideal tool to measure average speeds of up  to 400 miles or kilometres per hour. The numerals and graduations are perfectly legible thanks to the deposition of a narrow layer of platinum by a PVD (Physical Vapour Deposition)  process. THE OYSTER CASE, SYMBOL OF WATERPROOFNESS AND ROBUSTNESS         The COSMOGRAPH DAYTONA’s 40 mm OYSTER case, guaranteed waterproof to a depth of  100 metres (330 feet), is a paragon of robustness, proportion & elegance. The characteristically formed middle case is crafted from a solid block of 950 platinum. The fluted case back is hermetically screwed down with a special gizmo exclusive to Rolex watchmakers. The winding crown, fitted with the patented TRIPLOCK triple waterproofness  method, screws down securely against the case. It is protected by a crown guard that forms  The crystal is made of virtually scratchproof sapphire. The waterproof OYSTER case an integral part of the middle case. The pushers also screw down securely against the case.  provides optimal protection for the COSMOGRAPH DAYTONA's high-precision movement. CALIBRE 4130 CHRONOGRAPH AND SUPERLATIVE CHRONOMETER        The COSMOGRAPH DAYTONA is equipped with calibre 4130, a self-winding mechanical  chronograph movement with a column wheel entirely developed and manufactured by Rolex. a designation reserved for high-precision watches that have successfully passed the Swiss  Like all Rolex PERPETUAL movements, the 4130 is a certified Swiss chronometer, Official Chronometer Testing Institute (COSC) tests. Its design and quality manufacture provide peerless precision and reliability. The oscillator, the true heart of the watch, has a Insensitive to magnetic fields, the PARACHROM hairspring offers great stability when  blue PARACHROM hairspring patented and manufactured by Rolex in an exclusive alloy. shocks than a traditional hairspring. exposed to temperature variations and remains up to ten times more exact in case of SOLID-LINK BRACELET WITH SAFETY CLASP platinum, with an OYSTERLOCK safety clasp that prevents accidental opening. The clasp This new COSMOGRAPH DAYTONA is fitted with a solid-link OYSTER bracelet in 950  the wearer to basically increase the bracelet length by about five mm, for additional  also features the ingenious Rolex-patented EASYLINK fast extension process that allows  comfort in any circumstance. Technical Specifications REFERENCE (CASE – BRACELET): 116506 – 78596 CASE Type: OYSTER (monobloc middle case, screw-down case back, winding crown and  chronograph pushers) Diameter: 40 mm Material: 950 platinum, polished finish Case back: Screw-down with Rolex fluting Bezel: Chestnut brown monobloc CERACHROM in ceramic, engraved numerals and  graduations coated with platinum via magnetron sputtering Winding crown: Screw-down, TRIPLOCK triple waterproofness system Crown guard: Integral part of the middle case Crystal: Scratch-resistant sapphire Waterproofness: 100 metres (330 feet) MOVEMENT Calibre 4130, Manufacture Rolex Mechanical chronograph movement with column wheel and vertical clutch Bidirectional self-winding via PERPETUAL rotor on ball bearing Precision: Officially certified Swiss chronometer (COSC) Functions: Centre hour and minute hands, small seconds hand at 6 o’clock Chronograph (centre hand) accurate to within 1⁄8 of a second 30-minute counter at 3 o’clock and 12-hour counter at 9 o’clock Stop-seconds for precise time setting Oscillator: Frequency: 28,800 beats/hour (4Hz) Paramagnetic blue PARACHROM hairspring Breguet overcoil Large balance wheel with variable inertia High-precision regulating via four gold MICROSTELLA nuts Traversing balance bridge Jewelling: 44 rubies Power reserve: Approximately 72 hours DIAL Colour: Ice blue Counters: Chestnut brown lacquer, 18 ct white gold border Hour markers: Highly legible CHROMALIGHT appliques (long-lasting luminescence)          in 18 ct white gold Hands: CHROMALIGHT hands in 18 ct white gold BRACELET Type: OYSTER, three-piece solid links Material: 950 platinum, polished centre links, satin-finished outer links with polished edges Clasp: Folding OYSTERLOCK safety clasp EASYLINK 5 mm comfort extension link See Rolex Oyster Perpetual Cosmograph Daytona Platinum on amazon here