| Battery |
| Talk time | 8 h |
| Battery recharge time | 3 h |
| Standby time | 33 h |
| Headphones |
| Ear coupling | Supraaural |
| Headphone frequency | 150 - 7000 Hz |
| Impedance | 64 Ω |
| Headphone sensitivity | 91 dB |
| Logistics data |
| Harmonized System (HS) code | 85183000 |
| Master (outer) case width | 379 mm |
| Master (outer) case length | 576 mm |
| Master (outer) case height | 144 mm |
| Master (outer) case gross weight | 4.3 kg |
| Products per master (outer) case | 36 pc(s) |
| Microphone |
| Microphone type | Boom |
| Microphone frequency | 100 - 10000 Hz |
| Microphone sensitivity | -30 dB |
| Microphone direction type | Unidirectional |
| Microphone noise-canceling | |
| Operational conditions |
| Operating temperature (T-T) | 10 - 40 °C |
| Storage temperature (T-T) | 0 - 60 °C |
| Other features |
| RJ-9 connector | |
| Packaging data |
| Package width | 200 mm |
| Package depth | 180 mm |
| Package height | 35 mm |
| Package weight | 80 g |
| Performance |
| Product type | Headset |
| Wearing style | Head-band |
| Recommended usage | Office/Call center |
| Headset type | Monaural |
| Product colour | Black |
| Country of origin | China |
| DECT connectable | |
| Ports & interfaces |
| Connectivity technology | Wireless |
| Wireless range | 120 m |
| Weight & dimensions |
| Width | 165 mm |
| Depth | 165 mm |
| Height | 30 mm |
| Weight | 80 g |
Single headset for PRO 920/930 series duo (from warranty date code April 1, 2018 with new ear cushions)