Description: Dual Channel VHF Wireless Microphone Equipped with 2 sets of headset & clip microphones  Carrier Frequency Range: 210 - 270MHz Frequency Response: 50Hz - 15kHz Dynamic Range: ≥80dB Signal To Noise Ratio: ≥95dB System Distortion: ≤0.2% Operating Range: Approximately 50M Operating Temperature: -10oC - 50oC Microphone Power: 9V  ONE YEAR WARRANTY