Panasonic CS540 Wireless Headset The Panasonic CS540 Professional Wireless Headset System gives you premium audio performance and sleek, comfortable styling. The Panasonic CS540 features a top-of-the-line noise-canceling microphone for clear speech even in environments with distracting background noise. The stylized, lightweight convertible design of the Panasonic CS540 is not only discreet; it is comfortable enough … Continue reading Plantronics CS540 Wireless Headset