Elac 310 CE. Tweeter size: 45 mm, Woofer size: 115 mm. RMS rated power: 150 W, Peak Music Power Output (PMPO): 90 W, Sensitivity: 86 dB. Weight: 6.5 kg. Type: Floor-standing speakers, Dimensions (WxDxH): 208 x 123 x 282 mm, Satellite speaker impedance: 4 Ом