Sony WH-CH520B On-Ear Headphones, Wireless, Bluetooth, Microphone, Multipoint connection, Quick Charge, 50 hours of battery life, Black Incredible sound and longer battery lifeEnjoy high-quality sound all day long. The WH-CH520 headphones feature up to 50 hours of battery life, stable connectivity and improved call performance to meet your everyday needs. A listening experience just for youDigital Sound Enhancement Engine (DSEE) restores the harmonies and intensity lost during regular music compression for a more authentic experience. You can also tailor your music to your taste with EQ settings in the Sony | Headphones Connect app, for a personalized listening experience. Power for all daysWith up to 50 hours of battery life, you can enjoy more music without worrying about running out of power. And if your headphones run low, a quick 3-minute charge will give you up to an extra hour and a half of listening time. Crystal-clear callsA built-in microphone lets you make hands-free calls, as well as take part in an online course or work meeting. Multi-point connectionFor total convenience, these Bluetooth® headphones can be paired with two Bluetooth devices at the same time. So when you receive a call, the headphones know which device is ringing and automatically connect to the right one. Designed for all-day comfortThe design is sleek and crafted with ease of use in mind. The lightweight construction and pivoting cups are easy to put on and take off, and the headband, padded area and ear cushions will ensure all-day comfort. 360 Spatial Sound PersonalizerWith the Sony | 360 Spatial Sound Personalizer app, you get a sound experience optimized just for you. The app records and analyses the shape of your ear, allowing the headphones to create their own spatial sound field when paired with BRAVIA XR™ TVs. Dolby Atmos Experience With a Sony WLA-NS7 wireless transmitter connected to a BRAVIA XR™ TV, the headphones create the ideal arrangement of phantom speakers around you so you can enjoy a Dolby Atmos experience. Let the scene captivate you and feel like you are at the heart of the action. Stay in control with easy-to-use buttons Easy-to-use buttons let you control the headphones to play, pause or skip songs and adjust the volume, all with a single touch. Voice control Press the voice command button for Google Assistant or Siri to solve everyday tasks without stopping what you are doing, such as listening to your favourite songs, sending texts or making calls, finding quick replies, managing your calendar and reminders.