Sony SRS-X55/BLUE 30W Powerful Portable Bluetooth Speaker NFC - Blue Powerful, portable sound with 30 Watts of digital amplification Full-range, stereo speakers deliver rich, full sound Subwoofer with dual passive radiators delivers added bass emphasis Stream music wirelessly w/Bluetooth & NFC connections DSEE revitalizes your favorite audio files MP3, AAC, ATRAC, and WMA