Features: UHF Wireless System: The system includes lavalier microphone with body-pack transmitter and one receiver, featuring UHF wireless transmission, stable connection and low distortion ensure high quality vocal sound transmission. Clip-on Lavalier Microphone: The wireless lavalier style microphone can be easily clipped on your lapel and cloth, very convenient to install, battery powered for more portable application. 6.35mm Plug Receiver: The receiver with 6.35mm plug can be applicable for speaker, audio mixer and DVD player, 3.5mm audio adapter is for camera connection. Battery Adapter Powered: Lavalier microphone transmitter is powered by 2pcs AA batteries, easy to change on your own when the battery runs out. The receiver is powered with 1pc 18650 battery.(Batteries Not Included) Wide Application: The headset microphone system has can be widely applicable for video recording, broadcast, interview, online teaching and more occasions with 6.35mm plug and 3.5mm adapter.