Features: brand new and high quality 2-pole mono, 3-pole stereo, 4-pole pin direct insertion type. Suitable for mobile phone, notebook computer with earphone jack is integrated with the microphone jack. Made of metal shell, it feels good and is more durable. Mini condenser microphone, super compact shape, easy to carry. Product Dimensions 48mm. Specifications: Frequency response: 50Hz - 20KHz Impedance: 680 Mic size: 9.7X5.0mm Sensitivity: - 32dB 3dB (0dB=1Pa) Directionality: omnidirectional (single directional) Plug: 3.5mm straight plug Channel: 2-pole mono, 3-pole stereo, 4-pole pin (optional) Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Mini Microphone