Logitech LS11. RMS rated power: 3 W, Peak Music Power Output (PMPO): 6 W, Total Harmonic Distortion (THD): 10 %. Connectivity technology: Wired. Dimensions (WxDxH): 85.2 x 81.7 x 162.8 mm, Audio output channels: 2.0, Satellite speaker driver size: 50.8 mm (2 ")