▪Integrated Microphone ▪Moving-coil neodymium iron shed magnetic horn ▪Outside diameter :28mm ▪Frequency response :150HZ~ 4.5khz ▪Rated input power :30mW ▪maximum endurance power :50mW ▪Directivity: Single pointing ▪Size: Ф 6 * 2.7 mm ▪Frequency range :50HZ~ 3.0khz ▪Sensitivity: -44±3dB ▪Impedance: 2.2K ▪Working voltage :3.0V ▪Current: uA100 ~ 400 uA ▪Voltage withstand range :1.0~10.0V ▪Operating systems compatibility: Windows/MAC/Linux ▪Software compatibility: Skype, Zoom, Microsoft Teams