Voyager 510-USB Bluetooth Earset delivers true plug-and-play wireless connectivity. Ideal for professionals on the go, in or out of the office. Roam up to 33' from your Bluetooth device. Approximately 6 hours talk time makes it easy to stay connected. Features a USB Bluetooth adapter that enables instant, wireless access to softphones. With exclusive multipoint technology, seamlessly switch between VoIP softphones and mobile phones at the touch of a button. Receive notification of incoming calls from either Bluetooth device and answer/end calls remotely from the headset. Improves incoming and outgoing VoIP audio quality with Noise-Canceling microphone with WindSmart technology.