Small compact speakers for laptops and desktop computers. Easy to carry and store, they do not take up space on the table. They ensure a clear and natural sound. The elegant design matches perfectly with LCD screens and other accessories. They are compatible with all computers with USB output. The speakers connect to a PC or laptop via a 3.5mm audio mini Jack connector and are powered via a USB port, so they dont require additional batteries. They can also be used with mobile devices such as phones, tablets or MP3s. 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