Noise-Cancelling Hearing Aid For Seniors With Digital Display And Charging Box

1. The use of aluminum foil sound conductors makes the sound transmission clearer and isolates other signal interference. It can be bent and rotated 360 degrees, so it can be worn regardless of left or right.
2. High-definition digital display, say goodbye to battery anxiety
3. Fashionable appearance, infinite volume, more youthful products
4. Small and invisible, no need to worry about wearing and falling off
5. A single host can be used for 30 hours, carry the charging case, and charge it once every half a month
6. Regardless of left and right ears, one ear can be used, and it can be used as a backup hearing aid
7. 2 charging methods, you can directly power the host, or use the charging case to power it
8. Equipped with DC2.0 data cable and Type-C data cable

Parameters:
1. Maximum saturation pressure level OSPL90: less than or equal to 120+/-3 db
2. Output sound pressure level (high frequency average): 120+/-4db
3. Full-speed sound gain (high frequency average): 38+/-5 decibels
4. Frequency response range: 500 Hz - 3500Hz
5. Total harmonic distortion: less than or equal to 8%
6. Equivalent input noise level: less than or equal to 32dB
7. Battery current: less than or equal to 2 mA
8. Rated voltage: 3.7 V