USB rechargeable hearing aid USB reachargealbe Sound amplifier USB rechargeable deaf aid USB rechargeable audiphone

الوصف

KF***9A USB Rechargeable Behind the ear hearing aid
Feature:
1. Save money: Don't need to buy the batteries for the hearing aid, Batteries Warrant: *8 months.
2.   More Convenient: Use a USB interface, Can connect the power bank and computer, Rechargeable anytime and anywhere,
3.    Latest IC circuit system: The sound is more clear, The noise is smaller,
4.   Sound gain: The sound crest volume is bigger, More than *0dB,
5.  Worldwide universal USB cable and Adapter: ******0V, Include Asia, Europe, Middle East, Africa, America, etc.
Technical Parameter:
1.  Max sound output: **2 3dB
2.  Sound gain: *2 3dB
3. Total harmonic wave distortion <***0%
4.  Input noise:*0dB
5.  Current: <3mA
6.  Voltage: DC 3.7V (Lithium batteries)
7.  Batteries warrant: *8months
8.  USB cable and Adapter: ******0V