Features 【Powerful Frequency Effect Speaker】The horn is a frequency effect, the bass is very loud, the equivalent of a traditional 8 inch speaker. High Sound Quality Vibration Speaker: As there is no standing body wave, so all kinds of original vocal music, the sound quality of each sound frequency range is very clear. Wide Application Our resonance speaker is suitable for playing and expanding the sound of computers, laptops, MP3, MP4, CD, mobile phones and other equipment. 360° Frequency Transmission: Latest innovation, exceeds the limits of tradition, the bass speaker achieves 360° frequency transmission. Compact resonance speaker: the sound penetration is strong, small in size and convenient. Specifications: Colour: Steel Impedance Power (Optional): 4Ω 25W; 8Ω 20W Type: Electrodynamic (Moving Coil) Shape: Round Diaphragm material: non-paper. Magnetic circuit shape: internal magnetic type Frequency characteristics: full spectrum band (full range) Rated power: 25W Frequency response: 20HZ-20000HZ Directivity: Positive Sensitivity: 95 (dB/W) Noise Ratio: 90 (dB) Harmonic Distortion: 5 (TMD %) Size: 50 x 50 x 30 mm/1.97 x 1.97 x 1.18 inches. Weight: 268 g Features: Since there is no standing body wave, so all kinds of original vocal music, the sound quality of each sound frequency range is very clear. Sound penetration is strong, small in size and convenient. The horn is any frequency effect, the bass is very loud, the equivalent of the traditional 8 inch speaker bass effect. Latest innovation, breaking the boundaries of tradition, 360° frequency transmission. Suitable for playing and extending the sound of computer, laptop, MP3, MP4, CD, mobile phones and other equipment. Package includes: 1 x Vibrating Speaker Package List