This Wireless Headset/Lapel Microphone comes with a portable receiver, dual Bodypack transmitters, dual headset microphones and dual lapel microphones. The working frequency is from 902 to 928MHz and complies with the new FCC regulations for wireless microphone. This UHF technology also allows you to use several sets together without interfere with each other, great for interviews or small groups. Spend a few minutes to select the most appropriate frequency before using this system. - The LCD display in the Bodypack transmitter shows you the frequency, microphone volume as well as the battery level. Change the microphone volume and frequency from the Bodypack transmitter is easy. Both the Bodypack transmitter and the portable mini receiver are powered by rechargeable batteries. It is perfect for students, people starting out on YouTube, or other live events.