Tips: Please read the product description carefully before make the order
<br />Specification:
<br />Convenient wear
<br />Low noise, low distortion;
<br />For people with severe hearing loss;
<br />Product use hearing assistive devices.
<br />The scope of application of gas conduction hearing disorders.
<br />Taboos otitis media or ear suppuration who are disabled.
<br />Features:
<br />Maximum sound output: 130 ± 5dB    
<br />Sound gain: ≥ 50dB    
<br />Total harmonic distortion: ≤ 5%   
<br />Frequency range: 300Hz ~ 40000Hz    
<br />Input Noise: ≤ 30 dB    
<br />Operating voltage: 1.5V    
<br />Battery model LR44 
<br />Current: ≤ 4mA
<br />Weight: 74g
<br />Instructions<p> <b><b><img src="https://contestimg.wish.com/api/webimage/55cc37971491fd462a366650-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/55cc37971491fd462a366650-41-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/55cc37971491fd462a366650-42-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/55cc37971491fd462a366650-43-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/55cc37971491fd462a366650-44-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/55cc37971491fd462a366650-45-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/55cc37971491fd462a366650-46-original.jpg></b></b></p>