Material:Aluminum alloy+ABS Plastic
Frequency Range:35-20KHZ
Sensitivity:-38DB 士3DB, 0DB =1V/PA ,1KHZ
SNR：78dB
PAD Switch:+10dB,0dB
High Pass Filter:Two-step (flat, 80 Hz)
Impedance: 200Oh ms 士 30 %
Power Options:2 x AA Batteries
Battery Operate life:130H
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