| DESIGN AND DIMENSIONS | Poly SupraPlus H251/A Voice Tube | - |
|---|
| Product Type | Headset - wired | - |
|---|---|---|
| Weight | 49 g | - |
| Colour | Black | - |
| Recommended Use | Phone | - |
| SOUND QUALITY | Poly SupraPlus H251/A Voice Tube | - |
|---|
| Headphones Form Factor | On-ear | - |
|---|---|---|
| Connectivity Technology | Wired | - |
| Sound Output Mode | Mono | - |
| Frequency Response | 100 - 4000 Hz | - |
| Sensitivity | 15 dBV/Pascal | - |
| Impedance | 150 Ohm | - |
| MICROPHONE | Poly SupraPlus H251/A Voice Tube | - |
|---|
| Type | Boom | - |
|---|---|---|
| Microphone Operation Mode | Mono | - |
| Frequency Response | 200 - 4000 Hz | - |
| Sensitivity | -39 dBV/Pascal | - |
| Impedance | 100 Ohm | - |
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