Poly CS520-XD/ WH350-XD Spare Headset

The Poly 85T24AA#ABA is a spare wireless headset for the CS520-XD and WH350-XD systems, ready to step in when you need a replacement or an additional unit for shared desks. Once paired with the existing base, it delivers the same dependable performance that keeps conversations clear and teams productive.

This headset uses 900 MHz wireless technology, so you can roam up to 350 feet from the desk without worrying about Wi-Fi congestion or dropped audio. An over-the-head design secures two soft ear cushions, giving you binaural listening that blocks distractions and lets you focus on the caller. The noise-canceling boom microphone filters out office chatter, helping your voice sound crisp even in open workspaces.

Controls for volume, mute, and call management sit right on the ear cup, allowing quick adjustments while you walk, collaborate with a colleague, or pull a file from the cabinet. With up to 8.5 hours of talk time on a single charge, the headset easily covers a full day of back-to-back meetings or customer support shifts. Add an electronic hook switch or a handset lifter to the base, and you can answer or end calls without returning to the phone.

Whether you support customers in a contact center, manage sales calls from an open office, or rotate among hot desks, this spare headset keeps your workflow moving and your audio quality consistent.

• Pairs with CS520-XD and WH350-XD bases as a direct replacement or backup headset
• Wireless range up to 350 feet for untethered movement around the workspace
• Over-the-head fit with dual ear cushions for immersive, distraction-reducing audio
• Noise-canceling boom microphone that sends your voice through clearly
• Up to 8.5 hours of talk time per charge, ideal for full-day use
• On-ear controls for volume, mute, and call handling
• Stereo sound that enhances both voice calls and occasional media playback
• Compatible with electronic hook switch and handset lifter accessories for remote call control
• 900 MHz wireless link designed to minimize interference from Wi-Fi networks