The Microlab B51 Portable Amplified Stereo Speaker for Tablet and Notebook (Black) is designed specifically for people on the move. It is compact and in stereo, based on the popular soundbar design but made slender for notebooks and tablets. Driven by two quality 1.5 inch speaker drivers, this system is designed to enhance the rudimentary sound that comes with your notebook or tablet. Carefully engineered to isolate noise, this system has low distortion and minimum resonance. It comes with a unique clamp mount, which grabs onto your LCD screen edge firmly. Made to be compatible with most media player, it connects easily to any stereo audio source with 3.5mm plug. Connect to your notebook, tablet, mobile phone, MP3/MP4 player or even your PC and power its sound to amplified version. USB powered, no battery required. It connects to any USB port for its power.