Poly CS540A Convertible DECT Wireless Headset

The Poly CS540A is a convertible DECT wireless headset built around a small, 21g earpiece core that can be worn over-the-ear, over-the-head (with the included headband) or behind-the-head — letting the same headset suit different people and preferences on a shared desk phone line. It connects to a desk phone via an RJ-11 cable or DECT, roams up to 120m (about 400ft) from its base, and a noise-cancelling microphone keeps background sound out of calls.

Battery life is rated at up to 7 hours of talk time, and the headset is compatible with a wide range of optional electronic hookswitch (EHS) adapters for third-party desk phones, plus an optional HL10 handset lifter for answering calls without lifting the handset. The CS540A carries a one-year limited warranty and is TCO Certified.