The index and hands can be coated with a Superluminova treatment for a better readability underwater or overnight. In the RESERVOIR’s collection, the Airfight design has superluminova indexes. The LumiNova is composed of really tiny tritium bulbs that accumulate the light during the day to reflect it when it’s dark. This material avoids the use of radium salts that had radioactive elements. The SuperLumiNova is based on non-radioactive and non-toxic strontium aluminate and this type of texture is even shinier than de previous generation.