Customer service was excellent. I had an issue with my ring I had purchased back in 2023. After chatting with customer service they gave me 2 options. The first being a discount on a new gen 4 ring and the second being a refurbished Gen 3 ring free of charge. I felt like this was more than a fair exchange considering how old my ring was. Once I decided too go with the refurbished ring and let Oura know, I had my new ring in 4 days. Really remarkable and fantastic.