The BT-1961 is a 1960s-era mini bus-inspired portable, rechargeable Bluetooth speaker with a 2” speaker and a powerful, sound-enhancing bass radiator. It features a built-in LED party lights and FM radio. Connect to Bluetooth and enjoy your favorite music with the freedom of hands-free calling from your Bluetooth-enabled phone. It has a built-in microphone and allows MP3 music playback from USB drives, TF cards or an external audio device via the AUX input. Add a second BT-1961 and enjoy True Wireless Stereo (TWS) sound.