2.0 Active Speaker System Defender OnAir SFeatures:With universal columns Defender OnAir S4, you are guaranteed quality sound wherever you are. They are ideally suited for use with a laptop.Powered by USB. Speakers do not require mains supply. Simply connect the speakers to the USB-port of your computer and enjoy the sound. Speakers also need to connect to the audio jack of your PC, as this model is not equipped with an integrated sound card. Volume control. You do not have to switch to your media player to increase or decrease the sound. Adjust the volume of one! Magnetic shielding. Speakers can be positioned in the immediate vicinity of the monitor - a clear picture without interference guaranteed! Technical specifications:Sound drivers:2 "broadbandWattage:4 WFrequency response:80-20000 HzControls:volumeHousing Material:PlasticPower supply interface:5V from USB portItem number:65650
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