Keep the Music Going All Day Keep your tunes playing all day long, and then some. The built-in rechargeable battery delivers up to35 hours of listening on a single charge. One-Touch NFC Connectivity Wirelessly stream your favorite tracks with a Bluetooth connection. Pair your smartphone or tablet with these headphones and you can enjoy your music and even control playlists and volume right from your headphones. Travel-Friendly, Swivel Design Take these headphones anywhere you go. A swivel design makes it simple and safe to store them when youre on the move. The earcups swivel flat for easy packing in a suitcase or slipping into a bag. Built-in Microphone Take and make calls without ever touching your phone. With a high-quality built-in microphone, youll be able to have hands-free conversations on your smartphone with ease. Voice Assistant Check the weather, get the latest news and more using just your voice. Press the multi-function button twice and youll get instant access to Siri or Google Assistant. USB-C Charging The next generation of recharging technology comes to the CH510 wireless headphones with USB Type C charging.