The horn is all frequency effect, the bass is very strong, the equivalent of traditional loudspeaker 8 times bass effect.Latest innovation, break through tradition limitations, 360 ° frequency transmission.Since there is no body standing wave, so all kinds of vocal music, the sound quality of each sound frequency range is very clear.Sound penetration is strong, small size and convenient.Suitable for computer, laptop, MP3, MP4, CD, mobile phone, for PSP and other equipment sound playback and sound expand.Impedance power: 8 Ohm 20W / 4 Ohm 25WRated power: 20W / 25WType: electrodynamic (moving coil)Shape: roundMagnetic circuit form: internal magnetic typeFrequency characteristics: full spectrum band (full range)Frequency response: 20HZ - 20KHZDirectivity: positiveSensitivity: 95 (dB/W)Noise ratio: 90 (dB)Harmonic distortion: 5 (TMD %)size:50x50x30MMMaterial:metalcolour:SilverPackage Contents:1 * Vibration Speaker