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ce output frequency:20Hz-20KhzTHD:0.05%Recharging time:2 hoursNormally works current:30-35mA.Signal-to-noise ratio:87.2dbEarphone impedance :16 Weight:52gDimensions:172*160*40mmExtended Length of Earphonefixed lever:14mmRotary degree of earphone fixed lev
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