SmartNav head tracking mouse by NaturalPoint. This is a USB-connected mouse replacement device that uses head tracking technology. I obtained this device over a decade ago for use by people with disabilities and stored it after using it a few times. In preparation for listing it, I connected it to a Windows 10 computer with the software installed and was able to recognize and operate it. The accessories are as shown in the photos, but the silver foil stickers that reflect light are missing. I've included aluminum tape as a substitute. Ideally, you'd want more reflective foil. The red circle is the switch for mouse clicks. I have confirmed that it works, but it is old, so there is no warranty. The included CD may be outdated. You may need to research and obtain newer software. Some computer knowledge is required to operate this device. - Product Name: SmartNav Head Tracking Mouse - Brand: NaturalPoint - Features: Mouse replacement using head tracking technology - Connection: USB connection Thank you for viewing.