1. Wired headphone used for computer or other portable media player:
2. Ultimate sound quantity and adjustable fit.
3. High definition noise filter speaker.
4. Padded ear piece.
5. Adjustable volume and button switch.
6. OEM and ODM are welcomed.
Microphone unit: 1. Size: Φ6.0 x 5.0mm. 2. Frequency response: 30Hz - 16KHz. 3. Sensitivity: -58db+/-3db. 4. Rated voltage: 3V. Driver unit: 1. Size: Φ27mm. 2. Frequency response: 20Hz - 20KHz. 3. Sensitivity: 105+/-3db. 4. Impedance: 32Ω+/-15%. 5. Power capability: 100mw.