KF-809C USB Rechargeable Behind The Ear Hearing Aid

Feature:
1. Save money: Don't need buy the batteries for hearing aid, Batteries.
2. More Convenient: Use USB interface,Can connect the power bank and computer, Rechargeable anytime and anywhere,
3. Latest IC ciruit system : The sound is more clear, The noise is smaller,
4. Sound gain: The sound crest volue is bigger, More than 50dB,
5. Worldwide universal USB cable and Adapter: 100-250V, Include Asia, Europe, Middle East, Africa, America etc.

Technical Parameter:

1.  Max. saturated sound pressure:  ≤130+5 DB

2.  High frequency average:  116±5 DB

3.  Max.voice gain: 33±5 DB

4.  Equivalent input noise level: ≤32 DB

5.  Total harmonic wave distortion: ≤10%

6.  Frequency response range: 200-6500 HZ

7.  Battery capacity: 40mA battery is a rechargeable battery

8.  Continuous working time:≤15H

9.  The speaker impedance: 110 ohm

10. Working voltage:1.2V 

11. Working current:≤3 mA

12. Attachment:1*host,6*earplug,1*adapter（Europe or US）,1*data line,1*charging base,1*cleaning brush,1*manual