MUSYSIC 8-Channel Professional Wireless UHF Microphone System, 300ft Range Fixed Frequency Dynamic Handheld Microphones for Singing, Karaoke,...

Operates at 500-550 MHz with Individual Frequencies for Each Channel. 19' Rack-Mountable Receiver Powered by AA Batteries Up to a 300-Foot Range Set 1 Frequencies: 513.1MHz, 514.2MHz, 515.7MHz, 517.6MHz, 520.4MHz, 523.7MHz, 530.6MHz, 536.6MHz