System Features Dual channel UHF wireless system with 200 optional frequencies. Easy to setup. Infrared Scan and sync instantly and automatically sets up the system. LED display indicates the system RF and AF status,work frequency, channel ,battery, volume etc. Digital pilot technique and effectively anti-interferce noise. Design for the KTV entertainment and durability tube structure. Rugged metal housing on both transmitters and receiver Automatic digital pilot technology, a good solution to the KTV room cross-frequency phenomenon. Hidden one-click "lock" to lock the frequency groups. Convenient and practical. Optional transmitters. including Lavalier, Headset, and Gooseneck base microphones, catering to different user preferences.