There is a incredibly exclusive double index at twelve o’clock for orientation. At six o’clock, you've got the signature – because the Aquatimer can be found in each tritium or Luminova variants, you’ll see equally “T SWISS Built T” and “SWISS Built” signatures. A Observe to the tritium variations: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/