headsets complete with interchangeable cords for connection to different radio communication sets
- versatility of built-in headset pinout
- microphone adjustment in working position
- rotary device of microphone unit and its fixation in non-operating position on the back of helmet
| Operating frequency range, Hz | 200 – 5000 |
| Sound pressure level of the telephone at a frequency of 1000 Hz, not less than, dB | 114 |
| The module of the electrical impedance of the telephone at a frequency of 1000 Hz, Ohm | 20 ± 4 |
| Paraphonic sensitivity of the microphone, not less than, mV / Pa | 5 |
| Weight, no more | 350 г |
