Usage Tips:Impedance power:4ohm 25w Shape:round Diaphragm material:non-paper Magnetic circuit form:internal magnetic type Frequency characteristics:full spectrum band (full range) Type:electrodynamic (moving coil) Rated power:25W Frequency response:20 HZ - 20 KHZ (kHz) Directivity:positive Sensitivity:95 (dB or W) Noise ratio:90 (dB) Harmonic distortion:5 (TMD percent ) Weight:268 grams Colour:A:Silver Material:Metal Package Contents: 1 x Speaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store