Bass that moves you Feel more than just the beat. Extra Bass enhances all your low-end frequencies for deep power on every track. Just touch the button to get started. High-quality wireless listening Connect easily to your favorite devices via Bluetooth with NFC and enjoy high quality wirelessly streaming with built-in LDAC enhanced codec support. Optimize your sound settings Set the perfect sound for every Song. Sony Headphones Connect app lets you adjust your bass levels and gives you presets for club, hall, arena or outdoor style sound. Enjoy broad frequency response Large, 40mm driver units deliver broad, dynamic and balanced sound with 2-20,000 Hz frequency response when streaming wirelessly and 3-28,000Hz with the supplied audio cable. Easily take calls wirelessly Enjoy the convenience of hands-free calling thanks to the integrated microphone and Bluetooth connectivity. Simply press the phone button on the earpiece to accept incoming calls then press again to terminate the call. Music playback will automatically resume once the call is completed. Up to 18 hours of battery life The built-in rechargeable battery provides up to 18 hours of continuous, wireless music playback. When your battery runs low, passive mode (using the supplied cable) allows for continued listening. Product Details Feel the power of EXTRA BASS High quality wireless audio with Bluetooth and NFC, plus LDAC Optimize your sound settings with the Sony Headphones Connect app Enjoy broad frequency response Easily take calls wirelessly with the built-in mic Listen longer with up 18 hours of battery life Choose ROM black, red or blue to fit your style.