DIALOG M-550HV - Headset with volume control
| Model | M-550HV |
| Controls | Volume regulator (on cord) |
| Mode | Stereo |
| Loudspeaker diameter, mm | 30 |
| Impedance (Ohm) | 32 ± 15% |
| Sensitivity (dB/mW) | 105 ± 3 @ 1 kHz |
| Frequency range (Hz-kHz) | 20-20 |
| Acoustic environment | Closed |
| Flaps | Transparent plastic |
| Embouchures | "Supra-aural" foamed polyurethane |
| Headband | Adjustable length, plastic |
| Cable length (m) | 2,0 ± 10% |
| Connector type | Mini jack 3,5 mm |
| Microphone type | Capacitor |
| Microphone mode | Mono |
| Microphone construction | Headset |
| Body material | Plastic |
| Noise reduction | Foam-rubber |
| Impedance (kOhm) | 2.2 |
| Sensitivity (Db) | -60 ± 3 |
| Frequency range (Hz-kHz) | 20-16 |
| Jack plug | 3.5 mm minijack |
| Parts supplied | Headset, packaging |
Product card from www.dialoginvest.com