This Bundle Includes: 5x Poly (Plantronics) CS540 Wireless DECT Headset - Single Ear - Convertible (3 Styles) Noise Cancelling Microphone, Base, Headband, Eartips, Goby Labs Headphone Cable, Fiber Cloth. Delivers crystal-clear audio without Wi-Fi interference; offers up to 350 feet of wireless range for reliable communication in large workspaces.. Weighs only 0.74 oz (21 g) with intuitive one-touch controls for call answer/end, volume, mute, and flash, ensuring ease-of-use during long calls.. Features a noise-canceling microphone, SoundGuard to protect against levels above 118 dBA, and Anti-startle technology to smooth out sudden signal spikes.. Simple docking system allows new headsets to be connected effortlessly; supports conferencing with up to three additional headsets and optional remote accessories for enhanced call management.