Professional wireless headset features multi-device connectivity to let you take every call on the same headset whether it's on your desk phone, smartphone or softphone. Wireless DECT delivers true wireless freedom by letting you roam up to 450' away from your desk without dropping the call. Integrated call controls allow you to quickly answer/end calls, adjust volume and mute the line with a simple press of a button. UC Plug-and-Play means you're already set up instantly with all leading UC applications and softphones. Noise Blackout in the ear cushions and microphone eliminates background noise to prevent any distractions caused by ambient noise. Digital signal processing and HD voice make your calls more intelligible and lifelike for crystal-clear conversations. SafeTone technology counters unexpected spikes in volume to keep your ears protected. Plus, get the perfect fit for all-day comfort with its ergonomic frame and soft ear cushions.