This speaker features dual full-range drivers for 30W stereo sound and a built-in microphone. It includes a standalone RGB lighting system with 7 colors and 6 modes that sync with the beat. The speaker has a 3600mAh battery, IPX7 waterproof rating, and Bluetooth 5.0 with A2DP technology. Price drops from $139.99 to $26.99. Free shipping for Prime members or adds $6.