Lume is a short term for the luminous phosphorescent glowing solution applied on watch dials. Through the year Rolex has used different materials to achieve this.
Material | Period | Dial |
Radium | early 1960s | SWISS |
Tritium | 1998 | T Swiss T or T Swiss T<25 |
Luminova | 1998 – 2000 | SWISS |
Super Luminova | 2000 – 2008 | Swiss Made |
Chromalight | 2008 – now | Swiss Made |