USB POWERED COMPUTER SPEAKER-Built with dual powerful 5W drivers and rechargeable battery playing continuously 11-16 hours after being fully charged (takes 4 hours to be fully charged) depending on the volume you choose. WIRELESS & WIRED CONNECTION-The PC soundbar supports wireless Bluetooth transmission for devices like tablet, smartphone, and TF card, USB disk and AUX 3.5mm audio input interface for PC and small size TV, perfect for home,dorm room, kitchen, bathroom, car, parties, gaming and picnics use. UNIQUE CONCEALED DESIGN-The USB powered monitor speaker is designed to place under the PC in a concealed way, saving up desktop space. 15 inch size easy to fit into your backpack and take outdoors!