Industry-leading noise cancellation, powered by our HD Noise Cancelling Processor QN1 (Disclaimer in description) Premium sound quality - these Bluetooth headphones support High-Resolution Audio, and even compressed music files are upscaled using our evolved DSEE Extreme technology. Speak-to-Chat automatically pauses playback when you start a conversation, Wearing Detection powers off your headphones when you're not wearing them, plus more smart features for a seamless, hands-free listening experience. With multipoint connection, your Sony headphones can be paired with two Bluetooth devices at the same time 30 hours battery life (with Noise Cancelling on) plus fast charging (10 min charge for 5 hours playback)2 (Disclaimer in description) * New software update available on the 7th August The WH-1000XM4 over-ear headphones offer improved industry-leading noise cancellation (1), further improved sound quality, and even smarter features - now capable of adjusting not only to behaviour, but also location. Please note certain features of the WH-1000XM4 need to be enabled via the Sony Headphone Connect App before use. (1) As of 21st April 2020. According to research by Sony Corporation, measured using JEITA-complaint guidelines. In headband style of wireless noise cancelling headphones' market. (2) When using optional 1.5A or more AC adapter. From the manufacturer Only music, nothing else It’s just you and your music with the WH-1000XM4 headphones. The easy way to enjoy less noise and even purer sound, with smart listening technology that automatically personalises your experience.