Detailed Product Description 1) Frequency Response: 20Hz-20 kHz2) Speaker Impedance: 32Ω±15%3) Speaker: diaphragm 6U, diameter 10mm 4) Output Power: 3 mW5) Sensitivity: 90-98dB6) Cord Length:1.2m, diameter 1.3mm7) Jack: 3.5mm8) PUPVCTPE green wire9) Weight: 13g10) Material: made of plastic11) Application: MP3, MP 4, Cell phone, Computer, Game player