Technical Parameter: 1. Speaker type: Dynamic, ф30mm; 2. Impedance: 32Ω (ohm); 3. Speaker sensitivity: 105dB ?4dB at 1K Hz; 4. Frequency range: 50Hz~16KHz; 5. Connector: ф3.5mm stereo plug x 2; 6. Microphone type:condenser; 7. Polar Pattern：Omni-directional; 8. Microphone sensitivity: -62dB ?3dB at 1Khz; 9. Max. input power: 100mW; 10. Cord length: 6 feet (1.8m); 11. Weight: 125 g;