This speaker has the sonic clarity and total sound of a small bookshelf speaker, however it’s a lot less portable than our smaller picks. It's a tweeter and a woofer driver with stereo channels. It has an IP67 waterproof rating with a dual passive bass radiator. You can check https://www.bluetoothspeaker.top/professional-designer-bluetooth-speaker-high-quality-audio-box-speaker-wireless-speakers/