Specifications: Brand: MAMEN Model: WMIC-01 Transmitter Parameters: The Number of Channels: 50 Channel: A and B Modulation Mode: FM Carrier Frequency Range: 530MHz-590MHz Deviation: ±5kHz(-60dBv, input 1kHz) Signal-to-Noise: Higher than 70dB Audio Delay: 12ms Antenna: 1/4 Lambda Antenna (input) Audio Input Interface: 3.5mm Radio Frequency Output Level: 10mW Distortion: 1% less than Working Temperature: 0℃~50℃ Storage Temperature: -20℃~55℃ Compatible Battery: 2pcs AA batteries Receiver Parameters: The Number of Channels: 50 Channel: A and B Modulation Mode: FM Carrier Frequency Range: 530MHz-590MHz Deviation: ±5kHz(-60dBv, input 1kHz) Signal-to-Noise: Higher than 70dB Audio Delay: 12ms Antenna: 1/4 Lambda Antenna (input) Audio output Interface: 3.5mm Headphone Output Level: 30mW (16 Ohms) Distortion: 1% less than Working Temperature: 0℃~50℃ Storage Temperature: -20℃~55℃ Compatible Battery: 2pcs AA batteries Receiving Sensitivity: -95dBm Frequency Response: 50Hz-15kHz (±3dB)