We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Poly CS540 wireless DECT mono headset with convertible wearing styles and noise-cancelling mic

POLY

Poly CS540 Wireless DECT Headset Mono Convertible

SKU CH-7BBR-DS4M6

A wireless DECT headset for desk phones with a noise-canceling microphone, up to 7 hours talk time and a 120 m roaming range

  • Clear calls with noise-canceling microphone
  • Up to 7 hours talk time per charge
  • Roam up to 120 m or 400 ft from desk phone
  • Three wearing styles for all-day comfort
  • Connects directly to desk phone via included cable

Product Identity

The Poly CS540 is a mono wireless DECT headset designed for office workers who spend their day on desk phones. Its convertible design offers three wearing styles to suit individual preference. The noise-cancelling microphone keeps background sound out of calls. It connects directly to compatible desk phones using the included cable.

DECT Range and Talk Time

The headset operates on a DECT wireless standard providing a roaming range of up to 120 m or 400 ft from the base. Talk time reaches up to 7 hours on a full charge, supporting a typical workday. Users must stay within this radius to maintain a stable connection. Battery life limits continuous use before recharging is required.

Mono Convertible Wearing Style

This model delivers audio to a single ear, leaving the other ear open to the surrounding environment. The convertible frame supports three distinct wearing configurations for comfort. Buyers who need stereo sound for multimedia or dual-ear focus should consider a different form factor. The mono design is specific to this CS540 variant.

Highlights

  • Clear calls with noise-canceling microphone
  • Up to 7 hours talk time per charge
  • Roam up to 120 m or 400 ft from desk phone
  • Three wearing styles for all-day comfort
  • Connects directly to desk phone via included cable

Specifications

No published specifications for this item yet.

Questions about this item

Which wearing style should I choose with the convertible design?

The headset includes three wearing styles — over-the-head, behind-the-neck and over-the-ear — so you can pick the one that feels most comfortable for all-day use.

What does the 7-hour talk time mean for a typical workday?

Seven hours of talk time covers most of a standard shift; you can take calls continuously and recharge the headset overnight for the next day.

How far can I roam from the desk phone with the DECT connection?

The DECT link gives up to 120 m or 400 ft of roaming range, letting you move around the office while staying connected to the desk phone.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.