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DC power :10~30v DC,Operating range =30M Channel solation ratio=72db Frequency range:20-15000Hz Input resistance:1K,Signal-to-Nose:=45db Signal disortion: =3%[F=75kHz,f=1kHz] Frequency windage:=20kHz Current consumpation:0.05A(not charging) Charging voltage and current:DC 6V 200mA
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