Brand: Rapoo Horn Diameter: Φ50.00mm Sensitivity: 103dB±3db Impedance: 32Ω Frequency Range: 20HZ-20KHZ Wire Size: 2.1M LED working Voltage: DC5V Microphone Size: φ6*2.7mm Microphone Sensitivity: -42±3dB Microphone Impedance: 2.2KΩ Directionality: Omnidirectional Headphone Plug: USB+3.5mm Product Weight: 265 2 Year Warranty