This is the Edifier Bluetooth headphones, the stax spirit s3. I purchased these in almost-new, beautiful condition here about a month ago. The previous owner bought them new in January 2025. All accessories are included, and as a bonus, I'm including a mimimamo headphone cover (used a few times) and a charger (new). As the weather gets warmer, I think this cover will allow for a comfortable, smooth fit. I'm selling these to purchase the higher-end S5 model because I really liked the sound quality of these planar magnetic headphones, which I experienced for the first time. I think the sound quality of these S3s is superior to the Sennheiser Momentum Wireless 4 and Sony WH-1000xm6, etc. They are a monster of high resolution. All functions and the app are working comfortably. Please feel free to ask if you have any questions m(_ _)m