ERZHEN Four in One Wireless Microphone System #400

Key Attributes

Polar Pattern: Omni-directional, Cardioid
Type:     Condenser Microphone
Signal To Noise Ratio:     60DB
Frequency Response Rate:     30Hz-16KHz
Maximum SPL:     120DB
Sensitivity:     -41dB±2dB
Frequency:    610-690 MHz (adjustable)