computer earphone of high performance, 1.perfect sound effect, 2.competitive price 3.MOQ 5000; OEM order available computer earphone with below spec.:Speaker dia.:15mm or 13mmSensitivity: 110dB+/-3dBImpedance:32ohm+/-15%Frequency: 20-20kHzRated input power: 3mWMax input power:10mWConnector dia.:Φ3.5mm, gold plated,10 pin or othersWeight: 10gCord length:3M