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The Rolex Cosmograph Daytona is a legendary chronograph designed for precision timekeeping and motorsport use. This Ref. 116515LN-0055 stands out with its meteorite dial, Everose gold case, and Oysterflex bracelet, combining high-performance chronograph functionality with distinctive aesthetics.
General Specifications
- Reference: 116515LN-0055
- Collection: Cosmograph Daytona
- Case Size: 40 mm
Case
- Material: 18K Everose gold
- Construction: Monobloc middle case, screw-down case back
- Bezel: Black Cerachrom ceramic bezel with engraved tachymeter scale
- Crown: Screw-down Triplock waterproofness system
- Pushers: Screw-down chronograph pushers
- Crystal: Scratch-resistant sapphire
Water Resistance
- Rating: 100 meters / 330 feet (10 ATM)
Movement
- Type: Self-winding automatic chronograph
- Calibre: Rolex 4130 (in-house)
- Power Reserve: Approximately 72 hours
- Accuracy: −2/+2 seconds per day
- Technology: Parachrom hairspring (anti-magnetic), high-performance chronograph architecture
Functions
- Hours, minutes, small seconds
- Chronograph: central seconds, 30-minute counter, 12-hour counter
- Tachymeter scale on bezel for speed measurement
- Stop-seconds for precise time setting
Dial
- Color: Meteorite (natural Widmanstätten pattern)
- Subdials: Black contrasting chronograph counters
- Hour Markers: Applied index markers with luminous material
- Feature: Each dial pattern is unique due to natural meteorite structure
Bracelet
- Type: Oysterflex (elastomer over metal blade core)
- Material: Black elastomer with flexible metal core
- Clasp: Everose gold Oysterlock safety clasp
Technical Notes
- Calibre 4130 is optimized for reliability with fewer components than typical chronographs
- Cerachrom bezel offers high scratch resistance and color stability
- Meteorite dial is formed from natural extraterrestrial material, making each piece unique
