Used SONY WF-1000XM5 black wireless earbuds. Instant purchase available. Everything in the photos is included. Operation is also problem-free. World-class noise canceling (*). The integrated processor V2 and the high-quality noise canceling processor QN2e enable high-level noise canceling processing and sound quality signal processing. In addition, the "Multi Noise Sensor Technology" features dual feedback microphones and feedforward microphones, with three noise canceling microphones on each ear, achieving overwhelming noise canceling performance. High wearing comfort and minimal design achieved through miniaturization and weight reduction. Miniaturization is achieved through Sony's uniquely developed thin new driver unit and SiP of the main board. The wearing part, which was 7.3g in the previous model WF-1000XM4, has been reduced to 5.9g in the WF-1000XM5. By reducing the volume of the earphone body by about 25% compared to the previous model, interference with the ear is reduced, and comfortable wearing comfort is achieved. The inside of the wearing part adopts an "ergonomic surface design" that supports the earphone body on the contact surface with the ear, and adopts a curved shape that fits inside the ear. Furthermore, the height is also reduced, so the part that protrudes from the ear is smaller, achieving excellent wearing stability. The microphone part adopts a design without unevenness by applying fine hole processing to the metal, reducing wind noise. Sony's highest call quality in the history of fully wireless (*). High call quality is achieved while achieving miniaturization. By adopting a wind noise reduction structure, high-precision voice pickup technology, and a bone conduction sensor, Sony's highest call quality in the history of fully wireless has been achieved. It is possible to connect to two devices simultaneously regardless of the OS, and there is no need to switch Bluetooth connections. For example, if you connect to your personal smartphone and your company's computer, you can listen to music and content on your smartphone during your commute, and when you open your computer after arriving at work, you don't need to reconnect the Bluetooth of your earphones, and you can use the same earphones as the earphone microphone for online meetings. Sony Wireless Earphones Earphones