Visaton DSM 25 R. Tweeter size: 25 mm. RMS rated power: 80 W, Peak Music Power Output (PMPO): 140 W, Frequency range: 1000 – 30000 Hz. Diameter: 104 mm, Weight: 0.53 kg. Dimensions (WxDxH): 104.5 x 104.5 x 31 mm, Audio output channels: 1.0, Material: Metal