Klipsch ProMedia Ultra 2.0 PC Speaker System- Black Pair of compact multimedia speakers for PCs and portable audio devices Dual 2.5-inch fiber-composite cone drivers and 1-inch metallic polymer tweeters Delivers satisfying bass punch and rich midrange tones Main volume and bass level controls; headphone jack and auxiliary input 30 watts total RMS power (15 watts x 2); 1-year warranty