Active Noise Cancelation Industry-leading noise-canceling with Dual Noise Sensor technology Battery Life Up to 30-hour battery life with quick charging (10-minute charge for 5 hours of playback) Premium Sound Premium sound quality by DSEE Extreme technology Touch Controls Touch sensor controls to pause, play, skip tracks, control volume, activate your voice assistant, and answer phone calls Speak-To-Chat As soon as you speak to someone, Speak-to-Chat automatically stops the music and lets in ambient sound so you can conduct a conversation. Multipoint Bluetooth connection For total convenience, the WH-1000XM4 headphones can be paired with two Bluetooth devices at the same time. Adaptive Sound Control Smart function that automatically detects what you’re up to – for example, walking, waiting, or traveling – then adjusts ambient sound settings to best suit the situation. Clear hands-free calling Superior call quality with precise voice pick up combines five built-in microphones with advanced audio signal for clear calls Wearing Detection A proximity sensor in the earcups can detect whether or not you’re wearing your headphones, pausing your content when you remove your headphones from your head and resuming playback when you put them back on. Comfort Updated design relieves pressure for long-lasting comfort