Key Features

Single-ear wired headset with 3.5mm connector & USB adapter

High-definition audio with rich, vibrant sound

Advanced noise reduction for clear communication

Lightweight, ergonomic design for long wear comfort

On-ear busy indicator to reduce interruptions

Easy setup & intuitive tuning with automatic updates

Integrated serviceability for simplified IT management

Smart Integration & Reliability

The Cisco 521 is engineered for seamless compatibility with Cisco collaboration platforms, including Cisco IP Phones, Webex DX80, Jabber, Webex Meetings, and Webex Teams. IT teams benefit from centralized management, automated software upgrades, diagnostics, and streamlined deployment.

Technical Specifications

Wearing Style: Over-the-head, monaural (single ear)

Connectivity:

3.5mm connector for laptops, tablets, and mobile phones

In-line USB adapter with call control (answer, end, hold/resume, mute, volume)

Microphone: Unidirectional, frequency response 150–6800 Hz

Speaker Impedance: ~90 ohms

Audio Performance: Bold, clear sound for calls and music