The package includes 4 collar microphones with specific characteristics such as sensitivity, mic head size, input voltage, frequency response range, and more. The lapel mic is practical and durable, suitable for live streaming, recording, and video purposes. It is easy to clip on clothes, captures voices accurately, and is compatible with smartphones and tablets. The microphone is designed for convenience and professional use, with a long mic cable for flexibility. The product dimensions are 150 x 3 x 1.5 cm and it is manufactured by Toyvian. It is suitable for various mobile phone brands and offers clear sound quality without interference.