Product specifications:1. Horn diameter: 10mm2. Speaker impedance: 32Ω3. Maximum boost level: 98dB ± 3dB at 1KHz 1mW ( 0.179V )4. Rated power: 10mW5. Distortion: ≤3%dB at 1KHz6. Left and right balance: ±3dB at 1KHz7. Wire length: 120CM±0.2CM