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Features:_x000D_
It can be used for sound amplifier._x000D_
When you see film, watch tv play, have meeting, or have classes, the product can help you to hear the sound clearly and loudly._x000D_
While in forest, if you want to hear slight sound, it will be a good choice.
_x000D_ Specification:_x000D_ Max sound output: 110 ± 5dB_x000D_
Sound gain: = 30dB_x000D_
Total harmonic wave distortion: = 10%_x000D_
Frequency range: 300~4000Hz_x000D_
Input noise: = 40dB_x000D_
Voltage: d.c.1.5V_x000D_
Current: = 4mA
_x000D_ Specification:_x000D_