Plantronics Voyager Legend UC B235-M Bluetooth Headset - Retail Packaging - Black Multi-device Connectivity Manages Both Pc and Mobile/tablet Phone Calls From Single Headset Compatible with Windows or Mac OS.Portable USB Bluetooth Mini-adapter Stays In Notebook Port For Always-ready Connectivity Voice Command Menu To Answer Incoming Mobile Calls and Many Other Headset Commands Enhanced Voice Alerts For Caller Name (mobile Calls Only), Connection Status, Talk Time Remaining and More Precision-tuned Triple-mic With Enhanced Dsp For Superior Noise Cancellation