Sony SRSX55/BLK Powerful Portable Bluetooth Speaker (Black) Powerful, portable sound with 30 Watts of digital amplification, Full-range, stereo speakers deliver rich, full sound, Subwoofer with passive radiator delivers added bass emphasis, Stream music wirelessly w/Bluetooth& NFC connections DSEE revitalizes your favorite audio files (MP3,AAC,ATRAC and WMA), ClearAudio+ technology delivers rich sound, LDAC for an optimized wireless audio streaming experience, Enjoy up to 10 hours of battery life with a single charge Easily take calls using the speakerphone functionality, Single USB (1.5A output) for smartphone/tablet charging, Auxiliary audio input for additional audio sources, Attractive, neutral design compliments any dcor