SONY Wireless Earphones LinkBuds S White Noise Canceling Function Used for about 2 years. The battery is weak, and the maximum operating time is shorter, but other functions work without problems. I cleaned the main unit and case before listing, but please refrain from purchasing if you are sensitive to used items. I will ship it in the original box, packed in an outer box. Equipped with "Ambient Sound Mode" that allows you to hear both audio content and surrounding sounds. By increasing the amount of external sound captured in signal processing compared to previous models, more natural external sound capture is achieved. Furthermore, it is also equipped with a high-performance noise canceling function, providing both a high sense of immersion when enjoying content. In addition, it also features "Adaptive Sound Control," which automatically switches between noise canceling and external sound capture depending on the user's usage environment. (Quoted from the SONY official website) Sony Model Name: LinkBuds S Other Features: Noise Canceling