... Microphone, UHF Wireless Microphone, Professional Microphone, Mic, Wireless Mic, PA Mic Wireless Microphone, Karaoke Wireless Microphone, UHF Wireless Microphone, Professional Microphone, Mic, Wireless Mic, PA Mic, Karaoke MicrophoneModel: K-820 Wireless MicrophoneFEATURE* UHF ... UnbalancedRF power10~30mW Modulation modeFMBattery requirement2×1.5V AA size Wireless Microphone