Item Name: Noise Reduction Live Mai Audio Wireless Lavalier Microphone Outdoor Recording. Frequency response range: 40Hz-20KHzBattery life: 6-8 hoursSignal-to-noise ratio: 85dBMicrophone Type: CondenserBuilt-in battery capacity: 300mAh-500mAhSpecification:Model: S9Microphone Type: CondenserSize: 5*4*1.5cmDisplay: noneWith wireless: noInput voltage: 220VThe Package Includes:1Pcs Wireless Lavalier Microphone *
