Features: High quality invisible hearing aid sound amplifierlSuper mini size and light weight, not easily to be seenlAdjust volume to the minimum before wearinglIncrease volume gradually to avoid sudden increase in soundlConvenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudlySpecification:lType: K-188 Hearing aidlMini ITE Hearing aidlMax Sound Output: ≥110 dB ± 5dBlMax Sound Gain: ≥30 dB ± 5dBlFrequency Range: 300～4000HzlInput Noise: ≤40 dBlBattery: A10 Button battery (included)lWorking Voltage: dc1.5VlWorking Current: ≤3mAlColor: As the picture shows
