This is the popular Sinn Euro Flieger III. It's a Japan-limited edition of 100 pieces released in 2022. I purchased it new from a Sinn specialty store in Hiroshima. It has a 2-year warranty, but with my membership card, it's extended by one year. I've worn it several times. There are some scratches from use, and the crystal is made of circular reinforced plastic, but it also has scratches. Sinn will clean the bezel and crystal during maintenance. It's a very cool watch. It has a retro feel, and the yellow is eye-catching.