Rolex Cosmograph Daytona 126500LN
The Daytona is a chronograph: it displays the time and measures a separate duration using dedicated counters. This version combines a white dial, black bezel and Oyster bracelet, with full reference 126500LN-0001.
Read the counters before judging the design
Running seconds appear at six o’clock. The chronograph has a central seconds hand, a 30-minute counter at three and a 12-hour counter at nine.
What does the bezel scale do?
The tachymeter helps calculate average speed from the time taken over a known distance. Its numbers alone cannot give a speed without a duration and distance.
Power reserve is not battery life
This is a mechanical movement. About 72 hours is its approximate running time when fully wound, not a battery life.
Key specifications
| Full reference | 126500LN-0001 |
|---|---|
| Diameter | 40 mm |
| Material | Oystersteel |
| Movement | 4131 · Self-winding chronograph |
| Power reserve | About 72 hours |
| Stated water resistance | 100 metres |
| Dial | White with contrasting counters |
| Bracelet | Oyster |
Questions to understand the watch
Is a chronograph the same as a chronometer?
No. A chronograph measures elapsed time; chronometer is a designation associated with accuracy testing.
Does this guide cover every Daytona?
References, movements and materials vary between versions. This guide covers the specific version identified above.
Terms in this guide
ChronographChronometerPower reserveContent: Thahby · Sources reviewed:
Official Rolex page ↗This information concerns the version shown. It does not establish the authenticity or current water resistance of an individual watch. Specifications from earlier years may differ.
