Typically a binocular sees as much as your eyes can see. It only enlarges images and grants you a better view. So a lot depends on the magnification power of the device. The more the magnification power, the better you'll see things present at a distance. Normally a binocular with 10x magnification grants you a clear view of about 12 miles. Keeping this estimate in mind, you can choose the ideal binocular for you. But remember that the device will only show you things that are visible to the naked eye, just more significant.