Jamo IW 406. Tweeter size: 25 mm, Woofer size: 165 mm. RMS rated power: 60 W, Peak Music Power Output (PMPO): 120 W, Frequency range: 65 - 20000 Hz. Weight: 1.8 g. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 231 x 107 x 325 mm, Audio output channels: 1.0