Performance and convenience in a compact stylish notebook speaker set. Enjoy rich digital USB sound edgy design and convenient volume controls. No batteries required. A single USB cable supplies both audio and power. The Logitech® S-150 speaker system is the perfect audio companion to your notebook. 2.0 USB digital speaker systemAdvanced digital USB for premium sound clarityLight compact design for portabilityNo batteries or power supply required (single USB cable for both audio and power)Satellite base designed for greater stability on the desktopBuilt-in easy-access controls for volume and muteDigital-power indicatorBrown-box packaging. .