The WH-CH520 is a lightweight on-ear wireless headphone for casual use. Long battery-life, quick charging and handsfree voice calls, with multipoint, also  make this great-value headphone an easy choice. A first for this category of headphone, the companion app provides many features, including adjustable sound and other custom settings. Key Features Lightweight on-ear Bluetooth v5.2 headphones Up to 50 hours battery life with quick charging (3mins = 90mins music) Multipoint connectivity and clear voice calls DSEE music-upscaling for better sounding music Earcups can swivel to a flat, easy to carry shape Sony | Headphones Connect companion app for EQ adjustment and more