Freedom from noise and wires Listen without wires and block out unwanted background noise, just hear your favourite music with digital noise cancellation. Noise cancelling made for travel with One Push Artificial Intelligence Noise Cancellation (AINC) analyses background sound and adjusts it for optimal performance on aeroplanes and other noisy environments. Just press and hold the NC button on your headphones to activate it. Listen all day, charge up quickly Keep your music playing all day. A built-in Li-ion battery delivers up to 35 hours of power (depending on your music settings) and is rechargeable via USB. Quick Charging gives 60 mins of play back from 10 minutes of charge. Customise your settings with Sony | Headphones Connect App Tune your headphones to your perfect sound with the free Sony | Headphones Connect App for Android and iOS. Adjust audio levels and digital soundfield modes with a range of presets and customisable EQ settings easily from your smartphone. Virtualphones Technology (VPT) simulates outdoor-stage, club, hall, or arena style sound. NFC One-touch for instant connectivity Near Field Communication (NFC ) technology makes complex set-up sequences a thing of the past. Simply touch selected NFC -enabled devices to the on-body N-mark for a quick, seamless connection, then start streaming content via Bluetooth connection. No NFC No problem. You can still manually connect using your device’s settings menu.