... 5) color: black,silver,r best mini speakers,mini speaker,mini speaker MA-02 1,Mini speaker2,mini digital speaker3,mobile ... -029,kaidaer mini speaker10,mini single speaker11,portable mini speaker MA-02mini speaker with FM,TF card,support USB1) Output: RMS ... : 150~1800Hz(±3dB)SNR: 80dBSpeaker: 1.77" (diameter 45mm) magnetically shielded, 4ohmPower Input: USB cable or Power adapter 5V/1000mAProduct size ...