Two Sets Of Hearing Aid Sound Amplifier Hearing Aid Headphones

1. Main unit (1) earplugs (4) battery (2) brush (1) earplug cleaning stick (1)

Plastic gift box (1) English instruction manual

2. Maximum sound output: 110±5dB

3. Sound gain: ≥30dB

4. Total harmonic distortion: ≤10%

5. Frequency range: 300 - 4000 Hz

6. Input noise: ≤40 decibels

7. Working voltage: 1.5V (AG3 button battery)

8. Working current: 4mA