Visaton FR 16 WP. Driver size: 165.1 mm (6.5 "). RMS rated power: 60 W, Peak Music Power Output (PMPO): 80 W, Frequency range: 60 – 15000 Hz. Diameter: 130 mm, Weight: 0.42 kg. Type: In-wall/On-wall/In-ceiling speakers, Dimensions (WxDxH): 180 x 180 x 67 mm, Audio output channels: 1.0