Cosmograph Daytona Oyster, 40 mm, Oystersteel and yellow gold Reference 126503 Luxury Edition

Description

Rolex Cosmograph Daytona 126503 – Technical Specifications

• Model Reference: 126503

• Type: Chronograph (Stopwatch)

• Case:

  • Diameter: 40 mm

  • Material: Oystersteel and 18 ct Yellow Gold

  • Case Shape: Oyster case, known for its robustness and water resistance

  • Water Resistance: 100 meters (330 feet)

  • Crystal: Scratch-resistant sapphire with anti-reflective coating

• Movement:

  • Type: Self-winding mechanical chronograph (Automatic)

  • Movement: Rolex Calibre 4131 (Chronograph with automatic winding)

  • Power Reserve: Approximately 72 hours

  • Magnetic Resistance: Parachrom hairspring (anti-magnetic feature)

• Dial:

  • Dial Color: White with black sub-dials

  • Material: Brushed finish dial, designed for legibility

  • Hour Markers: 18 ct yellow gold markers, coated with Chromalight (for luminous display)

  • Sub-dials: Three black sub-dials displaying chronograph functions (seconds, minutes, and hours)

• Functions:

  • Chronograph: Timing function with second, minute, and hour counters

  • Tachymeter Scale: Engraved on the yellow gold bezel, used for measuring average speed over a known distance

• Bracelet:

  • Material: Oystersteel and 18 ct Yellow Gold (matching the case)

  • Clasp: Oysterlock safety clasp, with Easylink extension system for easy bracelet adjustment

• Additional Features:

  • Functionality: Time display, chronograph stopwatch, and tachymeter

  • Crown: Triplock screw-down crown, ensuring waterproofing, with settings for time, date, and chronograph adjustments