for export elderly wireless invisible sound auxiliary hearing device_浙江百灵电子

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for export elderly wireless invisible sound auxiliary hearing device

for export elderly wireless invisible sound auxiliary hearing device

专供出口老人无线隐形声音辅听器

200 pair

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辅听器的主要作用是把声音放大。

助听器内部有三大件，麦克风-机芯-喇叭
它的工作原理就是将将声音转变为电信号经过放大处理再变为声音传入人耳。

Update time：20240418110656