STURDY BUILD WITH DETAILSMetal UHF cordless microphone receiver and handheld microphones are designed to last, suitable for heavy use. Bodypack is built with high-quality components and comes with lapel microphone and headset microphone. Both dynamic handheld microphone and bodypack are equipped with a MUTE function for your convenience. This wireless headset lapel microphone system also comes with AA batteries 25 SELECTABLE FREQUENCY GROUP: State-of-the-art circuitry design with 25 tunable frequency groups for this microfono inalambrico set in 500MHz band from 530MHz - 580MHz, allowing multiple wireless microphones & systems to use at the same time without interference. You can enjoy the freedom of changing frequency if preset frequency failed. Operating distance is up to 200ft in open space line of sight STABLE WIRELESS PERFORMANCE: High-quality cardioid capsule and improved circuitry design of microphone wireless system can capture sound and transmit it smoothly without dropo