Purchased around 2022, used for about a year and a half, and then stored because the battery in the left earbud stopped holding a charge. Please purchase only if you understand this. Manufacturer: SONY Product Name: LinkBuds S Color: Beige Model Number: WF-LS900N [From the manufacturer's website] • Fully wireless earbuds with high noise-canceling performance despite their small size and light weight. They are designed to minimize protrusion from the ear and have a center of gravity close to the head, achieving a stable fit. • With noise canceling ON, the main unit lasts for up to 6 hours, and with case charging, the total battery life is up to 20 hours. • Supports quick charging, with 60 minutes of playback from a 5-minute charge. Equipped with "Ambient Sound (External Sound Capture) Mode" that allows you to listen to surrounding sounds while listening to audio content.