Soundpeats wireless earphones, the Opera05. I purchased these used two years ago and have used them frequently. I was using them until recently, and they work without any problems. Since I'm still using them, there might be slight changes from the photos. They show signs of use overall. The battery lasts for about 2-3 days with 30 minutes of use in the morning and evening after a full charge. In actual use, I charged them about once or twice a week. The case is small and fits easily in a pocket. They can be charged with a USB TYPE C cable. These earphones produce powerful bass while also differentiating the mid and high ranges. You can also boost specific frequency ranges using the dedicated app. They also have noise canceling, which cancels out train and car noises, as well as some voices, to the point where they're not noticeable. I will wipe them down before shipping. I plan to ship them via Mercari's Nekopos service. I apologize, but I cannot accommodate price negotiations. Thank you very much.