Features:

• High quality invisible hearing aid sound amplifier



• Super mini size and light weight, not easily to be seen



• Adjust volume to the minimum before wearing



• Increase volume gradually to avoid sudden increase in sound



• Convenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudly

Specification:

• Type: K-188 Hearing aid



• Max Sound Output: ≥110 dB ± 5dB



• Max Sound Gain: ≥30 dB ± 5dB



• Frequency Range: 300～4000Hz



• Input Noise: ≤40 dB



• Battery: A10 Button battery (included)



• Working Voltage: dc1.5V



• Working Current: ≤3mA