... 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 ... Ratio≥100dBAudio outputBalanced and UnbalancedRF power10~30mW Modulation modeFMBattery requirement2×1.5V AA size Wireless Microphone