| Operating frequency range, Hz | 100 – 6000 |
| The module of the electrical impedance of the telephone at a frequency of 1000 Hz, Ohm | 300 ± 60 |
| Paraphonic sensitivity of the microphone, not less than, mV / Pa | 5 |
| The response of the phone at a frequency of 1000 Hz, not less than, Pa | 8 |
| Weight, no more | 120 г |
