Sensitivity:-32dB3dB (0dB=1Pa) Directionality: Omnidirectional microphone core Plug: Computer USB plug Microphone tube diameter: 4.0mm outer diameter Applicable: Any computer with USB jack can be used (such as desktop computers, laptops, bank teller POS machines) Model:ZJ002MR Frequency response:20Hz-16KHz Impedance:2.2K Signal-to-noise ratio: equal 58DB Current consumption:Less than 500uA Microphone core size:9.7x6.7mm Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:Black Material:Plastic Package Contents: 1 * USB Microphone Only the above package content, other products 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.