CASIO BABY-G Digital Display 10-Bar Water Resistance - Brand: BABY-G - Color: White - Model: BA-110 - Water Resistance: 10-Bar - Features: Analog with Digital Display There are no visible stains on the surface, but the areas that were in contact with the skin seem to have discolored slightly. You can see this in the 5th and 6th photos. Purchased in 2020, I wore it often in the year I bought it. Since 2021, I haven't worn it at all because I bought an Apple Watch, and it has been stored in a dark place. Operation has been confirmed.