The Plantronics CS50 Spare Headset is a replacement headset for the CS50 and CS50-USB Wireless Headset Systems. It can be worn on either ear and features a noise-canceling microphone, which reduces background noise. It has a range up to 300 feet and also has a one-touch call control.
Noise-canceling microphone filters out background noise
Up to eight hours talk time per battery charge
Roam up to 300 feet from your office phone
Remote ring detection
Call control at your finger tips: call answer/end, volume +/-
Convertible: over-the-ear, over-the-head or optional neckband for behind-the-head
900MHz frequency for clear, private, secure conversations