The speaker has two full-range drivers and dual passive radiators produce 20W stereo sound with enhanced bass, tight mids and crystal clear highs .Get more bass and volume louder by single pressing the extra bass button. Enjoy the big punch beat filling each corner of your room with this bass Bluetooth speaker.It is fast link table transmission barrier-free connection with a range of about 10 meters,it is compatible with mainstream mobile,computer,notebook,tablet and so on.