Professional grade, wireless Bluetooth headset for non-Bluetooth computers. The base connects to the PC via a USB connector. Wireless range between the base and headset up to 75 feet. Features a sophisticated noise canceling microphone for demanding voice applications such as speech recognition. Durable and comfortable. Headset controls include pairing, microphone mute & volume. The headset also works with Bluetooth cellular phones. Backed by a two year manufacturer's warranty. USB connection compatible with Windows Vista, XP, Me, 2000, 98SE and Mac OS 9.1 and higher.