Sony SRSX33 Powerful Portable Bluetooth Speaker (Red) Powerful, portable sound with 20 Watts of digital amplification, Full range, stereo speakers deliver rich, full sound, Single 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 12 hours of battery life with a single charge Easily take calls using the speakerphone functionality, Convenient speaker charging via micro USB input, Auxiliary audio input for additional audio sources, Attractive, neutral design compliments any dcor