Origin:China Mainland
Model Number:Hearing Aids
Certification:NONE
Equivalent input noise:≤32dB
Frequency response range:450Hz~3000Hz
Full sound gain:38dB+-5dB
High frequency average:118dB+-4dB
Rated power supply current consumption:≤10mA
Total harmonic distortion:≤10%

Product Features： 1. Low-frequency noise reduction, intelligent noise reduction, no noise, listen to natural sounds 2. Medical silica gel, comfortable to wear, suitable for long-term wear, and does not affect normal life 3. Small size. Portable storage, only 7-8g, very convenient to carry 4. Easy to use, it can be used continuously for 18 hours if you change the AG13 / LR44 battery once. If you use it for 2-3 hours a day, you can use it continuously for a week. YK-139 Hearing aid Meet the world again, complete！ Intelligent noise adjustment Reduce noise damage to eardrums lonely! without sound Need more care Restore Reality Relive the most real world Low frequency noise reduction Intelligent noise reduction without noise, listening to natural sounds Medical silicone comfortable to wear Suitable for long-term Wear, does notaffctnormal life Even force Long-term comfort and comfort Easy to use Toggle adjustment, do not understand the manual will also use Soft medical silicone, durable Soft texture, can be rotated 180 degrees left to right Not harsh, comfortable to listen Effectively handles howling at a speech frequency of 250hz 3000hz Small size. Portable storage Only 7-8g, it is very convenient to carry around Easy to install: Battery selection: AG13 / LR44 1pcs battery options, convenient and quick