Elac Micromagic 2.1 BT. Tweeter size: 20 mm, Woofer size: 108 mm. RMS rated power: 120 W, Sensitivity: 84 dB, Crossover frequency: 3800 Hz. Weight: 6500 g. Type: Bookshelf, Audio output channels: 2.1, Subwoofer dimensions (WxHxD): 218 x 150 x 178 mm