| Microphone Type | : | Bi-directional |
| Input Impedance | : | 20 Ohms |
| Sensitivity (headphone) | : | 115 dB +/-3 dB |
| Sensitivity (microphone) | : | -42 dBV/Pa +/- 3 dB |
| Frequency response (Headset) | : | 20 Hz - 20 KHz |
| Frequency response (Microphone) | : | 100 Hz - 16 KHz |
| Code | : | HEOLGT-20 |
| response | : | 28 kHz |
| Impedance | : | 32 1 kHz |
| Sensitivity | : | 1 kHz) 11 |
| Input power | : | 30 mW (Ma |
| Code | : | HERZ-03 |
| response | : | 28 kHz |
| Impedance | : | 32 1 kHz |
| Sensitivity | : | ( 1 kHz) 1 |
| Input power | : | 30 mW (Ma |
| Code | : | HERZ-04 |
| Frequency r | : | 12Hz-28 k |
| Impedance | : | 32 1 kHz |
| Sensitivity | : | (1 kHz) 1 |
| Input power | : | 30 mW (Ma |
| Code | : | HERZ-01 |
| Frequency r | : | 12Hz-28 k |
| Impedance | : | 32 1 kHz |
| Sensitivity | : | (1 kHz) 1 |
| Input power | : | 30 mW (Max |
| Code | : | HERZ-02 |
