Type Electric (moving coil) Use loudspeaker Shape oval/round Composition method: coaxial composite Diaphragm material non-paper magnetic Road form internal magnetic type Frequency characteristics Treble (high frequency) Rated power 1-1.5 (W) Rated impedance 8 (Ω) Frequency response 710 (kHz) Directivity standard Sensitivity 85 (dB/W) Sex to noise ratio standard (dB) Harmonic distortion standard (TMD%)