1. Exclusive patent, 4 directions can be switched
2. Support microphone gain, headphone volume adjustment
3. Support audio output such as mute, earphone speaker, etc.
Directivity: stereo, cardioid, omnidirectional, bidirectional
Frequency response: 20Hz-20kHz
Sensitivity: -46±3dB
Impedance: ≤2.2KΩ
Supply voltage USB 5V
Line length: 2.5m