AKG JBLONTIMEBLKE. Magnet type: neodymium. RMS rated power: 12 W, Frequency range: 70 - 20000 Hz, Impedance: 5000 Ом. Headphone connectivity: 3.5 mm. Diameter: 254 mm, Weight: 1.2 kg. Type: Portable speakers, Audio output channels: 2.0, Power requirements: 230V AC