Dragon NaturallySpeaking 10 Preferred Wireless includes everything you need to control your computer wirelessly. You'll get the same great dictation results - without the wires. This special edition of Dragon includes a Plantronics Calisto headset with Bluetooth USB adapter kit in the box. Universal and highly comfortable design, adjustable to left or right ear. Up to 33 feet (10 m) range. Up to 8 hours talk time. Includes USB Bluetooth adapter for plug-and-play PC connectivity. Includes convenient USB headset charging cable. Bluetooth headset included..