Comfortable, stylish and functional The Huawei FreeBuds Studio Wireless Bluetooth Noise-Cancelling Headphones are simple and elegant in design. Sitting comfortably over your ears, you'll be fully immersed in your music or podcast. Soft earpads provide a sealed environment for you to enjoy your music undisturbed by background noise. Active noise-cancellation The background noise is limited not only thanks to the closed earcup system, but also with 3 levels of active noise-cancellation. Four microphones in each earpad detect ambient noise all around you and actively balance out its soundwaves. The result is perfect silence.When you want to keep an ear out for your train annoucement, you can switch to Awareness mode or use Voice mode, which only lets human voices in. Hands-free music and calls The FreeBuds Studio use multiple microphones for clear voice calls. Your voice is filtered from background noise and wind. There are buttons for power, Bluetooth and noise-cancellation modes, along with intuitive touch controls for more options. Enjoy your music for 20 hours or more per charge. Or if you can't wait until your battery is fully replenished, just 10 minutes of charging will give you more than 5 hours.___________________________________________Please note: Some features are only available through the AI Life app and/or supported on phones running selected versions of the EMUI operating system.