Features: 1. High Quality Crystal Clear Sound: Distinct mids and highs from our precision acoustic drivers delivers excellent stereo sound and enhanced bass from our proprietary passive bass radiator design. Built-in a big power driver of 8W portable speakerphone with crystal clear sound and strong bass without distortion even at highest volume. 2. Louder Volume and More Bass: The speaker could provide 30% louder volume and richer Bass than Other competitors. The Crystal clear deep bass 8W HD loud speakers for both active outdoor and indoor use. .