Features 【HIGH QUALITY】The horn is all frequency effect, the bass is very strong, the equivalent of traditional loudspeaker 8 inch bass effect 【PRACTICAL FUNCTION】Latest innovation, break through tradition limitations, 360 ° frequency transmission 【EASY TO USE】Sound penetration is strong, small size and convenient.Since there is no body standing wave, so all kinds of vocal music original, the sound quality of each sound frequency range is very clear 【APPLICABLE OCCASIONS】Suitable for computer, laptop, MP3, MP4, CD, mobile phone and other equipment sound playback and sound expand 【SERVICE 】: If you encounter any problems during use, please let us know. We will contact you quickly. It is our pleasure to help you. Specifications:Color: steelImpedance power(Optional): 4 Ω 25 w;  8 Ω 20 wType: electrodynamic (moving coil)Shape: roundDiaphragm material: non-paperMagnetic circuit form: internal magnetic typeFrequency characteristics: full spectrum band (full range)Rated power: 25WFrequency response: 20HZ -- 20KHZ (kHz)Directivity: positiveSensitivity: 95 (dB/W)Noise ratio: 90 (dB)Harmonic distortion: 5 (TMD %)Size: 50 * 50 * 30 mm/1.97*1.97*1.18inchWeight: 268 g Package Included:1 x  Vibration Speaker Package List