Lightweight with an ergonomic design, the WF-C510 earbuds pair comfort with up to 22 hours' battery life in both the earbuds and the charging case for an easy, all-day listening experience. Available in a range of colours, they can pair with two Bluetooth-enabled devices simultaneously, automatically switching between them when you get a call. A compact, lightweight pair of earbuds with up to 11 hours of battery life in the buds and another 11 hours of charge in the charging case. Also includes Digital Sound Engine Enhancement (DSEE) and Multipoint Connection for simultaneously playback from two Bluetooth devices. Small, light, and a great fit, the WF-C510 are our most compact ever closed-type truly wireless earbuds[FN|Smallest size (volume) in Sony?s closed-type wireless earbuds as of 27th Aug, 2024.]. Enjoy superb comfort and an even better fit, thanks to their rounded shape and reduced surface area. Our products are not only designed to be stylish but also with the environment in mind. Recycled plastic is used in the WF-C510 earbuds[FN|Recycled plastic use may vary by product colour. Recycled plastic is used in multiple parts of the earbud body, which is subject to change.], and no plastic is included in the individual packaging[FN|Coating and adhesive materials excluded. This varies by region.]