Small compact speakers for laptops and desktops. Easy to carry and store, they do not take up space on the desk. They provide clear and natural sound. The elegant design is ideal for LCD screens and other accessories. They are compatible with all computers with a USB output. The speakers connect to the computer or laptop via a 3.5 mm audio mini Jack connector and are powered via the USB port, so they do not require additional batteries. They can also be used with mobile devices, such as phones, tablets or MP3. Speaker system 2.0 5V USB port power supply Volume control RMS: 2 x 3W Speaker: 2 x 2" Frequency range: 280 Hz - 18 KHz Impedance: 4 ohms