Sony Wireless Noise Cancelling Black Bluetooth Headphones(WH-CH700N) * DIGITAL NOISE CANCELLING: Blocks out distracting background noise for a better music experience * AI POWERED: Hold the NC button for uniquely tuned noise cancellation courtesy of next gen AI tech * HANDS FREE CALLING: A built in microphone lets you take/make calls and access your voice assistant * LONG BATTERY LIFE: Enjoy up to 35 hours of wireless playback and 10 min quick charge capability * VOICE ASSISTANT: Alexa enabled for voice access to music, information, and more. Activate with a simple touch * Work From Home: Improve your productivity at home with a built-in microphone and Digital Noise Canceling to take calls or reduce distractions all day long. * Distance Learning Ready: Connect wirelessly to a computer or tablet for all-day classes or music/movie breaks