mini speaker,portable speaker,TF card speaker with high quality Support USB Flash Driver, SD card, Line In, Torch Light, ... response40--5000 Hz (-6 dB)SNR≥58 dBA SpeakerSpecificaitonΦ40MM 3W 4Ω *2Sensitivity80 ± 4 dBFrequency response20 Hz - ... ,00040GP container (pcs)107,400mini speaker,portable speaker,TF card speaker with high qualitySupport USB Flash Driver, SD card, Line In, Torch ...