There's a wonderfully unique double index at 12 o’clock for orientation. At 6 o’clock, you've the signature – because the Aquatimer are available in the two tritium or Luminova variants, you’ll see the two “T SWISS Designed T” and “SWISS Manufactured” signatures. A note over the tritium versions: IWC preferred https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/