... 3)3.5mm stereo plug 4)Good sound quality Mini speaker for business gift • Dimension:60mm(D)*45mm(H)• Net Weight ... • AMP Freq Range:180Hz-20kHz• S/N:more than 80DB• Speaker:40Hm,φ40mm• Line input:φ3.5mm• Battery Voltage:3.7V ... ,MP3,MP4,MD,CD,DVD player,Mobile phone,etc • Mini Speaker*1• USB Cable with 3.5mm Audio Jack*1• User ...