Highlights True Wireless Design 6.1mm Drivers Bluetooth 4.1 with 33' Range Adaptive Sound Control Noise Cancelling Technology Up to 3 Hours of Continuous Playback Companion App for iOS and Android Charger Carrying Case Included Features Enjoy a truly wireless listening experience with the black WF-1000X Headphones from Sony. These compact, wireless headphones feature 6.1mm drivers and utilize Bluetooth 4.1 connectivity to stream high-quality digital audio from compatible devices from up to 33' away. The WF-1000X comes equipped with noise cancelling technology to keep unwanted background noise out. Adaptive Sound Control technology automatically detects your activity and adjusts the ambient sound settings so you get the optimal listening experience. For an even more personalized listening experience, use the free Sony Headphones Connect app to customize the WF-1000X's settings. The WF-1000X Headphones come with a Charger Carrying Case that will power up your headphones while stored inside. With full power, the WF-1000X Headphones deliver up to 3 hours of continuous playback. In addition to the case, multiple sets of fitting supporters and additional earbuds are included. Compact, Comfortable, Wireless Design The WF-1000X headphones can be worn discreetly, comfortably, and tangle-free thanks to a completely wireless design Noise Cancellation Block out unwanted background noise with Noise Cancellation technology Sense Engine The WF-1000X headphones utilize SENSE ENGINE technology, which gives you the power to tune in and out of your music at a touch Different Modes for Different Scenarios Switch listening modes to let in or block out ambient noise, including voice announcement Hands-Free Calling Conversation flows freely with easy, hands-free calling. Leave your phone where it is, just speak with a click. Charge and Carry Case No need to worry about battery life, just place your headphones in the carrying case to charge on the go Long Battery Life The WF-1000X headphones yield up to 9 hours of battery life and up to 3 hours of playback