... USB LCD Micro SD/TF Mp3 Player Speaker 1.FM radio, 2.USB/TF ... Player Speaker TF/SD Cardmini speaker, computer speaker, speaker,mini computer speaker, usb computer speaker, 2.0 usb speaker, computer 2.0 speaker, notebook speaker, portable speaker, promotional speaker,Promotion gift speaker ... THD=10%Frequency:150-18000HZ (+_3DB)Speaker Size:45mm×2 Noise Ratio:≥80dbMaterial:plastic ... SD/TF Mp3 Player Speaker