Rolex Cosmograph Daytona

Rolex Cosmograph Daytona – Technical Specifications

Reference

• 126503

Case

• Material: Oystersteel and 18 ct Yellow Gold

• Diameter: 40 mm

• Case Thickness: ~11.9 mm

• Bezel: Fixed, 18 ct Yellow Gold with engraved tachymetric scale

• Crown: Screw-down Triplock winding crown (triple waterproofness system)

• Pushers: Screw-down chronograph pushers

• Crystal: Scratch-resistant sapphire

Water Resistance

• Waterproof to 100 meters / 330 feet

Dial

• Color: Black

• Details: Applied hour markers with Chromalight luminescent material

• Sub-dials:

  • 30-minute counter at 3 o’clock

  • 12-hour counter at 9 o’clock

  • Small seconds at 6 o’clock

• Hands: Yellow gold, luminescent

Movement

• Caliber: Rolex Manufacture Calibre 4131

• Type: Self-winding mechanical chronograph movement

• Functions:

  • Central hour and minute hands

  • Small seconds

  • Chronograph with 30-minute and 12-hour counters

• Escapement: Chronergy escapement

• Balance Spring: Parachrom hairspring

• Power Reserve: Approximately 72 hours

Bracelet

• Type: Oyster bracelet

• Material: Oystersteel and 18 ct Yellow Gold

• Clasp: Folding Oysterlock safety clasp with Easylink 5 mm comfort extension

Certification

• Superlative Chronometer (COSC-certified and Rolex-certified)

• Precision: −2 / +2 seconds per day (after casing)