45棋牌
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Sound Amplifier
SA-77
Sound Amplification , db 0~77
Frequency Response, Hz 100~15000
Sensitivity at frequency level of 1000Hz, mv/Pa~45
Supports Low Frequency Noise Cancellation
Power Source AA x 2 (~10hrs operation)
Dimension: 32cm*2.5cm*5.8cm (approx.)
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45棋牌