The package includes 10 collar microphones with features such as high sensitivity, lapel clip design, and compatibility with various devices. The microphone is suitable for live streaming, lectures, and interviews, and is practical and durable. It can be used on PCs, laptops, and cameras, and is widely used in various settings. The product dimensions are 150 x 7.5 x 1.5 cm and it is manufactured by Milisten. It is a miniature microphone made of APS material and does not require batteries.