Introducing the Sony SP700N Headphones, the world's first true wireless noise-cancelling headphones with splash-proof design. Equipped with a cushioned fit and sweat-resistance, these wireless earbuds are made to fill your workouts with your favorite music without getting in the way. Noise Cancelling technology blocks out sound from noisy environments, leaving you with just the music. Features True wireless designJust your music, with no wires to get in the way. 1 Keep your focus with Noise CancellationWhen you need that special playlist to take your workout to the next level, noise cancelling reduces ambient sounds of the gym and your surrounding environments, leaving just you and the beat Stay aware with Ambient Sound ModeAmbient Sound Mode expertly blends your music with the sound of the environment around you. Choose Normal mode for when you're running or working out outside to stay aware of your surroundings. Voice mode lets you hear instruction from a personal trainer or workout buddy while still enjoying your motivational music. Sweat and splash-proof Yes to music, no to sweat. With an IPX4 rating, the headphones can handle sweat or splashes from rain when you're working out. Secure and comfortable fit Extensively tested in real workouts, these headphones have a secure fit that you can adjust to your ears. A soft-cushioned fitting holds the earbud securely in place while maintaining ultimate comfort. Boost your performance Powerful EXTRA BASS™ sound gives you the drive to keep going by enhancing low frequencies for bigger beats. Up to 9 hours battery life Enjoy up to 9 hours of playback, with 3 hours of battery life and up to 6 hours of additional playback with chargeable carrying case.4 Built-in microphone for hands-free calls and voice assistant commandsTake and make phone calls, even with your phone in your pocket or bag. You can also connect to your favorite voice assistant, such as Google Assistant or Siri, by long-pressing the play button on your headphones6. With a high-quality built-in microphone, you'll be able to have hands-free conversations on your smartphone with ease. Customize your sound as you like with the Sony | Headphones Connect" App for Android/iOSSimply download the Sony | Headphones Connect app and set up your ideal noise cancelling and equalizer settings in Quick Sound Settings5. Then when you're ready to get started, push the Noise Cancelling button twice to access your saved sound settings in an instant. Hard, durable carrying caseThe included chargeable carrying case has a durable, hard-shell construction that holds its shape and protects the earbuds while they're in your backpack or gym bag.