Sony SRSX77 Powerful Portable Wi-Fi & Bluetooth Speaker, (Black) Powerful stereo sound with 40 Watts of digital amplification, Full-range, stereo speakers delivers rich, full sound, Subwoofer and dual passive radiators deliver added bass emphasis Stream music wirelessly w/Bluetooth & NFC connections, Powerful multi-room listening with Song PAL, Google Cast ready for easy streaming of your favorite music apps DSEE revitalizes your favorite audio files (MP3, AAC, ATRAC, and WMA), LDAC for an optimized wireless audio streaming experience, ClearAudio+ technology delivers rich sound Wi-Fi audio streaming with DLNA and AirPlay support, Enjoy up to 106 hours of battery life with a single charge, Single USB (1.5A output) for smartphone/tablet charging Auxiliary audio input for additional audio sources, SongPAL App for intuitive remote control, Attractive, neutral design compliments any dcor