Over the Ear Headphones Sony WH1000XM4L, Wireless, Bluetooth, Noise cancelling, Microphone, Autonomy 30 hours, Blue Wireless headphones Sony WH-1000XM4 with noise cancellation Unique features: 30 hours of battery; Design around the ear (Over ear); Optimized for Alexa and Google Assistant; With built-in microphone for phone calls. Industry leader in noise-canceling headphones Whether you're on a trip or relaxing in a cafe, the WH-1000XM4 headphones offer the best noise-cancelling performance, keeping even more high-pitched and mid-range sounds. Wireless freedom, premium sound LDAC transmits three times more data (with a transfer rate of 990 kbps) than conventional Bluetooth®, enabling high-resolution audio playback comparable to a wired connection. Even compressed music files are elevated, with our advanced DSEE Extreme™ technology, for a richer and more complete listening experience. Smart functions to improve your listening WH-1000XM4 uses several smart technologies for perfect, hands-free listening. Speak-to-Chat will pause the music when you start a conversation, and Wearing Detection pauses playback or turns off the headphones when you're not wearing them. Multipoint connectionWH-1000XM4 can be paired with two Bluetooth® devices at the same time. When a call comes in, your Sony headphones know which device is ringing and automatically connects to the right one. You will also be able to easily and quickly change the headphones on either of the two devices with the simple touch of a button. All-day energy and fast charging With a huge battery life of 30 hours (with Noise Canceling on), you will have enough energy - even for long journeys. And if you need to recharge in a hurry, you can get a 5-hour charge in just 10 minutes with the optional power adapter.