Rolex brand

Cosmograph Daytona Series

Automatic mechanical movement type

4131 movement model

40mm dial

Oyster steel case material

Basic Information Number m126503-0003 Brand Rolex Series Cosmograph Daytona Movement Type Automatic Mechanical Gender Men’s Movement Movement Model 4131 Movement Type Automatic Mechanical Manufacturer Rolex Balance Wheel Extra Large Inertia Fine Adjustment Balance Wheel Frequency 28,800 vibrations per hour Hairspring Paramagnetic Blue Parachrom Hairspring Shock Absorption High Performance Paraflex Shock Absorption Jewels 47 Power Reserve 72 Hours Technical Certifications Superlative Chronometer Certification Appearance Case Diameter: 40 mm Case Thickness: Not available Dial Color: Black Dial Shape: Round Strap Color: Two-tone Clasp Type: Folding Oysterclasp with 5 mm Easylink Extension System Case Back: Solid Case Back Weight: Not available Water Resistance: 100 meters Hour Marker Type: Bat Hour Markers Luminous Clasp Spacing: Not available Lug Spacing: Not available Material Case Material Oystersteel Dial Material Black dial features a snail-shaped small seconds sub-dial, 18ct gold hour markers and hands coated with clear and legible Chromalight luminous material. Bezel: 18K gold (fixed) with tachymeter scale; Crystal: scratch-resistant sapphire crystal; Crown: screw-down, Triplock triple waterproof system; Bracelet: Oystersteel-18K gold; two-tone, Oyster, three-link solid link clasp; (Currently unavailable) chronograph function.