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
