3.5MM stereo plug FOR:
1. Language and other training
2. Recorder
3. Internet Video chat
4. Video conferencing
5. Internet gaming sensitivity: -55dB±2dB; Directivity: Noise canceling; Impedance: 2.2K; Sensitivity reduction: within -3dB at 1V; Operation voltage: 1.5V; Standard operation voltage: 1.5V; Frequency response: 50Hz-16KHz; S/N ratio: >36dB; Cord length: 1.5m