Artsound MDC700. Tweeter size: 19.1 mm, Woofer size: 133.4 mm. RMS rated power: 50 W, Peak Music Power Output (PMPO): 100 W, Frequency range: 64 - 20000 Hz. Weight: 2.8 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 215 x 75 x 215 mm, Audio output channels: 2.0