30W high-power dual speaker unit, 63Hz-20kHz wide frequency response, powerful bass, clear treble, immersive stereo sound effects fully utilized. Bluetooth 5.1 high-speed stable connection, multi protocol compatible with various devices, 10dBm low consumption strong signal, transmission without buffering or disconnection. 4800mAh large capacity lithium battery, 2.5-hour fast charging and 12 hour battery life, USB-C fast charging port+1.2-meter fast charging cable, more worry free for outdoor use. The estimated time of international logistics package is 7-20 days, and that of UPS/TNT/DHL is 5-12 days. Please consult customer service for details. thank you..syi