True Wireless Stereo Connection (TWS): Add another BT-1953 speaker and enjoy wireless stereo sound from your speakers. To set up TWS, first connect each Bluetooth speaker and then press a button on one of the speakers to connect both units to TWS configuration. HIGH-QUALITY SOUND: Plug in via FM tuner, USB, microSD, MP3 or AUX to play your favorite tunes through the dual 3-inch speakers. VERSATILE: This classic party speaker features LED party lights, a built-in microphone, a hands-free phone connection, and a headphone output for endless ways to listen and be entertained! PORTABLE: Perfect for listening on the go, this Bluetooth speaker includes a USB cable and user manual for convenience. RECHARGEABLE: The 2200mAh battery powered speaker is easily rechargeable via a 5V 1A DC cable providing hours of use per charge.