\"\nDSEE (Digital Sound Enhancement Engine) optimizes sound even at high frequencies for authentic sound. You can tailor the sound to your music style with the equalizer in the Sony | Headphones Connect app.\nSony 360 Reality Audio technology – optimises your experience by analyzing the shape of your ears via the Sony | Headphones Connect app, for an ever more immersive and tailored music experience.\nWith 50 hours of battery life, you can listen to your favorite music without worrying about running out of battery. If the battery life becomes too low, a quick charge of 3 minutes can give you 1.5 hours of listening.\nThe WH-CH520 features a multi-touch Bluetooth connection, controls via buttons and can even be controlled by voice. Swift Pair and Fast Pair features make it easy to connect, making this headset the perfect companion for your everyday life\nEasily answer calls by clicking the buttons on the headset. Thanks to a high-quality microphone, the WH-CH520 allows you to make calls audibly even in noisy environments.\n› See more product details\"