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Main features
| Type | Headset |
General
| Type | Headset |
| Analog audio formats | Mono |
| Noise and echo cancelling | Noise reduction |
| Weight | 21 g |
| Colour | Schwarz |
Technical specifications
| Frequency range up to | 6.8 KHz |
Classification
| eClass-10.1-ID | 19081003 |
| eClass-11.1-ID | 19081003 |
| eClass-6.2-ID | 19081003 |
| eClass-7.1-ID | 19081003 |
| eClass-8.1-ID | 19081003 |
| eClass-9.1-ID | 19081003 |
| eClass-ID | 19020502 |
| UNSPSC 20.0601 Code | 43191609 |
Poly HP Poly CS540A Convertible Headset +AP11 Kit - Wireless - Office/Call center - 20 - 6800 Hz - 21 g - Headset - Black - 6.8 KHz - Mono - Noise reduction - 21 g
