Rechargeable Mini Invisible Hearing Aid Deaf Elderly Ear Care Amplifier, Z-01B

1. Maximum volume output: ≤126dB +/-3dB
2. Base wave distortion: 8%
3. Frequency range: 450-5000 Hz
4. Sound gain: ≥30dB +/-5dB
5. Battery capacity: 30mAh
6. Operating voltage: DC1.2V
7. Input noise: ≤29 dB +/-3dB
8. Charging time: about 3h
9. Operating time: more than 40h
10. List of accessories: main unit x 1, earbuds x 4, brush x 1, user manual x 1, charging cable x 1
11. Size: about 1.8 x 1.6cm
12. Weight: approx. 5g

Features:
1. Built-in rechargeable battery, no need to replace battery
2. Separate cable and earphone design, more convenient and safe
3. Reduce electromagnetic interference
4. Aesthetic design and clear internal speaker sound effect
5. Filters out unwanted noise caused by airflow or wind and delivers direct, powerful and smooth sound directly to your ears
6. Compact design, extremely comfortable to wear, can be easily put into a pocket or handbag
7. Waterproof and resistant to most types of moisture and wear and tear