1. Rechargeable, built-in lithium battery with a capacity of 120mAh, can work continuously for about 20 hours after full charge, low current to save power.
2. Noise reduction: Input noise is less than 30dB, harmonic distortion is less than 5%, N/H mode switch and microphone and earphone separation design help reduce noise. Use H mode outdoors for clear audio and indoors in N mode for a more comfortable experience.
3. Using silicone earplugs, soft, comfortable and lightweight, suitable for long-term wear.
4. The battery indicator lights up when the hearing aid is turned on, and automatically displays the current battery level for 5 seconds; the LED light flashes every 5 seconds when it is working.
5. Simple operation: connect the silicone tip to the earphone, turn on the earphone and adjust the volume for clear sound, clip the earphone to the clothes.
6. Suitable for people with hearing loss below 70dB.

parameter:
1. Material: Silicone+ABS
2. Sound output (MAX): 130+/-5dB
3. Sound gain: greater than or equal to 45dB+/-5dB
4. Total harmonic distortion: less than or equal to 5%
5. Frequency range: 450~3000Hz
6. Input noise: less than or equal to 30dB
7. Voltage: DC 3.7V
8. Current: less than or equal to 4mA
9. Battery: Lithium battery, 120mAh
10. Weight: 12g