Logitech S150 1.2 Watts 2.0 Digital USB Speakers. 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.
 

Features:

USB connectivity
The USB cable connects your speakers to your laptop or desktop computer for distortion-free, digital audio—and battery-free power.

Stable base
The satellite base is designed for greater stability on your desktop.

Built-in controls
You can quickly and easily adjust the volume or mute the sound.

Digital-power indicator
A light lets you know when your speakers are on.