Full Cisco Headset 520 Series specifications: speakers, ports and dimensions and weight, from Cisco's published datasheet.

Headset 520 Series specs
| Spec | Headset 520 Series |
|---|---|
| Models | 521 single, 522 dual |
| Connection | 3.5 mm plug plus in-line USB-A or USB-C controller |
| Microphone | Unidirectional ECM, 150–6800 Hz |
| Speaker | 50 Hz–18 kHz |
| Max sound pressure | 118 dB SPL(A) with acoustic spike protection |
| Weight | 521 68.6 g (2.4 oz); 522 104.0 g (3.7 oz) |
| Cable | About 2.67 m overall |
| Warranty | 2-year limited |
How big is the Headset 520 Series?
The Headset 520 Series weighs 521 68.6 g (2.4 oz); 522 104.0 g (3.7 oz).
Ports and connections
- 3.5 mm plug plus in-line USB-A or USB-C controller
Compatibility
| Platforms | Webex and BYOD/USB |
| Mode | USB |
| Part number | CP-HS-W-522-USB= |
In the box
- Headset 521 or 522
- In-line USB adapter
Datasheet
These specs come from Cisco's datasheet and product page (source).
See the Headset 520 Series buyer's guide for price and who it's for, Headset 520 Series alternatives, Headset 520 Series vs Jabra Engage 40 and Headset 520 Series vs Yealink BH70, or check price and availability.
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