1. Speaker Diameter: 50mm\r\n2. Sensitivity: 115 +/- 3dB\r\n3. Frequency Range: 20Hz-20kHz\r\n4. Impedance: 32 ohms +/- 15%\r\n5. Microphone Sensitivity: -42dB +/- 1dB\r\n6. Microphone Impedance: 2.2k ohms\r\n7. Headphone Port: 3.5mm\r\n8. Operating Current: Less than or equal to 180mA\r\n9. Cable Length: Approximately 2.2m