Plantronics - CS540 Wireless DECT Headset with APS-11 (Poly) - Single Ear (Mono) Convertible (3 wearing styles) - Connects to Desk Phone - Noise Canceling Microphone

Connects to: Desk phone via included cable and APS-11 Ideal for: Office and desk-centric workers using desk phones requiring a remote answer solution Audio performance: Keep background noise out of your call with a noise-cancelling microphone Talk time & roaming range: Work better, hands free, with a roaming range of up to 120 m/400 ft. Talk all day with up to 7 hours of talk time per charge Global warranty & wearing style: 2 years; monoaural lightweight convertible (which can be worn either over the ear, over the head or behind the head)