DEWALT DWST17510 TSTAK Portable Bluetooth Radio with Charger. Features : Clear sound with 4 full-range speakers + 1 active subwoofer + 1 assisted bass resonator for loud, high-quality sound. Color flip screen and touch-sensitive buttons for exceptional user experience. IP54 rating for weather and dust resistance. Fast USB charging outlet and AUX port. Use the TSTAK Radio mobile app for full remote control.