Soaying 3.5 stereo plug fit for most PC.Sensitivity: -55dB ± 2dBImpedance: ≤ 2.2KSensitivity reduction: Within -3dB at 1.5 VOperation voltage: 1.5VFrequent response: 50Hz - 16KHzS ratio: More than 36dBColour:BlackMaterial:plasticPackage Contents:1 x MicrophoneOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.