This is a digital device which can fit the Nipon 26-78×78 scope, and the Nipon 70/350mm scope, and connect the scope to a desktop/laptop computer through a USB cable. You can see a distant object on the computer screen, adjust the scope’s magnification power from your computer and take pictures. You can also make a video recording of distant scene and save the video file (.avi) into the computer. This digital eyepiece has a standard fitting interface with eyepiece adaptor (i.e., diameter=1.25″ or 31.75mm) that can be fitted to a spotting scope or telescope as long as the scope has such a 1.25″ eyepiece holder. This digital device comes with relevant software programme and it works under Windows 2000, XP and vista. There is also a detailed user guide about how to set up and use the system. Please view the Product Details page for more information about this product.