Product NameWireless handheld microphoneBT chip2.0Battery capacity1000-1200mAhDisplay screenLedVocal tract2Transmission distance30MEndurance6-8HCharging time6-7HSignal to noise ratio:75dBmFrequency response range:20Hz-20kHzSensitivity<-94dBmFAQContact us for the latest catalog and quotation list!