Poly CS540 features a headset that weighs only 21 grams, providing up to 350 feet of wireless communication range and a battery that last up to 7 hours of talk time.

CS540 also provide advanced wideband audio using CAT-iq technology for clear conversations. Like the previous best selling Plantronics CS55, the CS540 features a noise canceling mic, DECT 6.0 (1.9Ghz) frequency, and a convertible headset (3 styles).

A feature of the CS540 is an adaptive power system that optimizes it for the perfect balance between range and talk time, and the ability to conference up to three additional CS540 headsets and allow co-workers to join calls quickly and easily.