WE're the manufacturer of headphone , earphone, flash card, MP3/4/5 and web cam.

Speaker Dimension: 30mm

. Impedance: 30Ω

. S. P. Lat: 1KHz . Sensiticity: 105Db

. Frequency response: 20Hz-2000Hz

. Pat power: 100mw

. Power capability: 10000mw

. Plug Type: 3. 5mm stereo