HDKaraoke HDK-UHF 100 is a UHF Wireless Microphone System that allows you to enjoy wireless singing and public speaking. It operates on the UHF frequency range of 470.2-607.8MHz and provides a stable and reliable wireless connection with a range of up to 50 meters in typical conditions. The system includes a receiver and two handheld transmitters, each powered by two 1.5V “AA” rechargeable batteries with a battery life of over 8 hours (alkaline). The receiver features XLR and 1/4 inch mix output sockets, allowing for flexible connectivity to various audio systems.