... Colorful and small pocket size Hot selling Original Kaidaer speaker KD-MN02 mini speaker with USB,FM radio,TF card slotSpecifications: Kaidaer ... =10%2.Frequency response: 150~1800Hz(±3dB)3.SNR: 80dB4.Speaker: 1.77" (diameter 45mm) magnetically shielded, 4ohm5.Power Input: ... a unique mini digital audio.The new aluminum diaphragm micro-speaker, clear,treble, bass, pure, unique design, the sound quality ...