There is a wonderfully unique double index at twelve o’clock for orientation. At 6 o’clock, you've the signature – because the Aquatimer are available in both equally tritium or Luminova variants, you’ll see the two “T SWISS MADE T” and “SWISS Created” signatures. A note over the tritium versions: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/