The ATN PatriotG-XDI is built as a compact, lightweight, Multi-Purpose Night Vision Monocular with many features and applications. The ATN PatriotG-XDI is a Night Vision Monocular as well as advanced Multi-Purpose System. Without tools the ATN PatriotG-XDI can be converted from Pocket Scope to head-mountable Night Vision Goggles or can be attached to the Film with SLR, Digital or Video Camera, or converted into a Long-Range Binocular. If versatility is what you are looking for in a Night Vision Device, then the ATN PatriotG-XDI is for you. Whether you are Boating, Camping, Home Security or Observing Wildlife, the ATN PatriotG-XDI is one of the best Night Vision Devices made.