I've been using this COROS APEX Pro since June 2022. While there are no particularly bad scratches or stains, it does show signs of use after three and a half years. The dial sometimes doesn't respond well. When this happens, I take it off and wash it with water, or I can get it to turn smoothly by pulling it out slightly while turning. - Brand: COROS - Model Name: APEX Pro - Accessories: Charging cable, instruction manual - Color: Black - Water Resistance: Premium Waterproof