Amplificador Audífonos Pequeño Invisible Mejor Sonido Tono Ajustable
Total Harmonic Wave Distortion: ≤10%. Adjust to either ear. Input noise: ≤40dB. Help you hear the sound clearly and loudly, whether indoors or outdoors. Max sound output: 110±5dB. Sound gain: ≥30dB. Based on your choice.