UseforNDSIconsole.Traits:1.Doublesterospearker;soundandalt-bassclesrly.2.soundfunctionwithclearlyElectricpropertytrait:speaker1.1083dBat1,000Hz/1.28V2.ResonancefrequencyFo250HZ±20%3.Frequencyresponse20-20KHz4.Degreeofdistortion:inputpowerrating1KHzandthemostdegreeofdistorationis5%Microphone1.sensibility:58±5dB2.S/N≤60dB3.Frequencyresponse30~16,000Hz