Description: EXTRA BASS for impressively deep, punchy sound Noise Canceling technology Enjoy wireless freedom with NFC and Bluetooth EXTRA BASS for impressively deep, punchy sound As part of the EXTRA BASS range from Sony, the WH-XB900N headphones enhance all your low-end frequencies for exceptional bass. A dedicated bass duct on the headphone housing and increased air-tightness between the driver units and eardrums help to create precise, punchy rhythms that lift every track. Yet the headphones also maintain vocal clarity for a wonderfully rich, well-rounded listening experience. Shut out the world and enjoy your own party for one with noise cancelling plus EXTRA BASS sound quality NFC and Bluetooth Near Field Communication (NFC) and Bluetooth wireless technology remove the need for wired connections and complex setup sequences. Simply touch your NFC-enabled device to the headphones for a quick, seamless connection, then start streaming your music collection. No NFC? No problem. Connect via Bluetooth and you're ready to go. Long battery life for all-day power Sleek, foldable design and long-listen comfort Built-in mic for easy conversation Long battery life for all-day power A charge of around 4 hours keeps you powered all day with approximately 30 hours of play time, so you can keep on listening, track after track, mix after mix. listen comfort Whatever your look, the simple, sleek, sophisticated design of the WH-XB900N headphones with a one-color vivid accent on the housing is the perfect match. Soft, cushioned ear pads offer long-lasting comfort, ideal for listening to your favorite albums, back-to-back. Finished listening? Simply fold them up for easy carrying.conversation It's easy to talk, even with your headphones on - a built-in mic enables you to take hands-free calls from selected smartphones. Just double tap the housing on the right-hand headphone to answer a call and swipe up or down to adjust the volume. pressed for time Control at your fingertips Be smarter with Voice Assistant Sony | Headphones Connect app Quick charging when you're pressed for time If your headphones are running low on power, a 10-minute quick charge will give you up to 60 minutes of play time. Ideal if you're rushing around from place to place. and take or make calls by tapping or swiping the touch panel on your headphone housing. For the Quick Attention function, just touch the right housing and the music volume is instantly reduced, enabling you to hear ambient sounds from someone asking you a question to announcements at stations or airports. Be smarter with Voice Assistant Manage your day by connecting to your smartphone voice assistant through the headphones' built-in mic. Enjoy entertainment, connect with friends, get information, listen to music and notifications, set reminders and more. Sony | Headphones Connect app Download the Sony | Headphones Connect app to customize your listening experience. Features include Adaptive Sound Control, which automatically detects what you're up to such as travelling, walking or waiting then adjusts ambient sound settings to suit the situation. The app also lets you customize these to your preferences, adjust sound levels with the equalizer and more.