Check the listing for details. Mini Microphone Bendable Flexible 3.5mm Aux Mono / Stereo / 4 Mic. Condition: New. Listed at 4.81 USD. Mini Microphone Bendable Flexible 3.5mm Aux Mono / Stereo / 4 Mic Features: brand new and 2-pole mono, 3-pole stereo, 4-pole pin direct insertion type. Suitable for mobile phone, notebook computer with earphone is integrated with the microphone Made of metal 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 Ω Mic size: Ø 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) Package Includes: 1 Mini Microphone 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!