Durable and Detailed Our Metal UHF wireless receivers and microphones are crafted to withstand constant use For your convenience we ve included AA batteries with the cordless microphones Additionally the set comes with 2 anti rolling rings to make sure your microphone safety Automatic Scanning and Anti Interference Capabilities The karaoke microphone system features an automatic scanning function enabling the wireless microphone to search for the least interfered channel for pairing with the transmitter Additionally it includes a locking feature to secure the chosen frequency The gain antenna enhances interference resistance and minimizes channel to channel interference Wireless Performance Reliable and Consistent With its high quality cardioid capsule and improved circuitry design each handheld microphone captures and transmits sound smoothly ensuring there are no dropouts hiss or feedback This results in robust clean and stable sound quality The microphone is suitable for various applications such as church events weddings public speaking instructional sessions conferences and outdoor events Box Content 1 x UHF wireless receiver 2 x UHF wireless mics 1 x power adapter 1 x 1 4 audio cable 4 x AA battery 1 x user manual 2 x anti roling rings 2 x Antennas