for export bte elderly deaf invisible ear-back replaceable battery

for export bte elderly deaf invisible ear-back replaceable battery

专供出口 BTE 老年人耳聋隐形耳背式可更换电池

200 piece

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老年人耳聋隐形耳背式助听器

主要技术参数：

最大饱和声压级：126±5dB

满档声增益：50±5

总谐波失真：≤10%

等效输入噪声级：≤32dB

电压：1.5V/1.3V

电流：≤4.5mA/3.5mA

Update time：20240328162523