Wireless headset features eco-DECT technology to provide a safe output of power with minimal emissions while delivering high-quality audio. Headset adjusts the radio frequency in four steps depending on the distance between the headset and the base. The closer to the base, the lower its power output. Light, flexible over-the-ear style ensures all-day comfort. Noise-canceling microphone reduces background noise to prevent any distractions during an important call. 500' range lets you roam freely for complete mobility. Long-lasting battery provides up to nine hours of talk time so you never drop a call. Headset also offers conference calling, consultation hold function, out of range indication and more. Headset is compatible with VoIP platforms including Microsoft Lync, Skype for Business, Skype and more.