Wireless Lavalier Microphone Noise Reduction 2 Way Monitoring Wireless Lavalier Lapel Mic for Outdoor Live Recording 1 for 2 Item Type: Wireless Lavalier Microphone Material: ABS Transmitter: Bluetooth Protocol: BT5.1 Applicable Distance: Approx. 15-30m / 49.2-98.4ft Frequency Response: 20Hz-20KHz Sampling Rate: 48KHZ Operating Current: 33mA Power Off: ≤2.4uA Endurance: ≥7H-9H MIC: -36dB Signal To Noise Ratio: ≥85dB Analog Sound: 3.5MM Transmission Digital Sound: TYPE C Transmission Operating Temperature: -10℃-50℃ Battery Type: Lithium Battery Single Transmitter Battery Capacity: 300mAh (Included) Receiver: Applicable Distance: Approx. 15-30m / 49.2-98.4ft Sound Delay: ≤30ms Sampling Rate: 48KHZ Operating Current: 15mA Standby Power Consumption: ≤1.2uA Endurance: ≥7H-9H MIC: -36dB Signal To Noise Ratio: 85dB Analog Sound:3.5MM Transmission Digital Sound: TYPE C Transmission Operating Temperature: -10℃-50℃ Battery Type: Lithium Battery Battery Capacity: 300mAh (Included)