lantronics - CS540 Wireless DECT Headset (Poly) - Single Ear

Connects To: Desk phones via included cable. Ideal For: Office and desk-centric workers using desk phones Audio Performance: Keep background noise out of your call with a noise-canceling 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 light weight convertible (which can be worn either over-the-ear, over-the-head or behind-the-head).