Hearing Aids CIC Invisible Rechargeable Hearing Amplifiers

Max sound output:118��3dB Sound gain:��35��5dB Total harmonic wave distortion: ��5% Frequency range: 300-4500MHz Input Noise:��32dB Voltage: d.c.1.2V Current:��5mA Main unit, Charging 2~3 hours for 20 hours use Charging case 90 mins for hearing aids charging 5 times