Model: CT 525 specifications: all frequency sound box, frequency and frequency response: 20 hz - 20 KHZ (plus or minus 3 db), unit: 1 only 5.25 inch full frequency speaker unit; Rated power: 80 w; The rated impedance: 8 ohm; Size: 190 mm (width) * 115 mm * 305 mm (deep) (high)