In summary, this Electret Condenser Microphone Pickup is a solution for anyone who needs a reliable and versatile sound and light control solution. Its high sensitivity design, and easy-to-use plug-and-play design make it a choice for professionals and amateurs Whether you are using it for a theater system, a recording , or a live performance, this product is sure to meet your needs and your expectations. Features -Color:Multi -Material:Copper -Size:1.60X0.50X0.50cm/0.63X0.20X0.20in -Output impedance :2.2K -Operating voltage :1-10V -Working :150-500μΑ -This Electret Condenser Microphone Pickup is a solution for anyone who needs a reliable and versatile sound and light control solution. -Its high sensitivity design, and easy-to-use plug-and-play design make it a choice for professionals and amateurs -Whether you are using it for a theater system, a recording , or a live performance, this product is sure to meet your needs and your expectations. -Enhanced sensitivity for precise control of sound and light. Versatile design allowing for use in various settings -Utilization of friendly copper materials for a safer and more sustainable product Package list: 20 x Electret Condenser Microphone Pickups