The iPhone Binoculars come in the regular form of binoculars and you can use them as that, but the gadget can also attach to the smartphone to enable 8x magnification for the camera.
As these come with carrying case and cleaning cloth, you can take them with you on trips and use them to check distance subjects. When you want to take close-ups or record detailed videos, you can simply attach one side of the binoculars to the iPhone camera. This way the smartphone is turned into a viewfinder while the 36mm lenses of the binoculars enable 8x magnification for a 465-foot field, at 1,000 yards.
The iPhone Binoculars also come with a phone case that you need to use in order to seal over one eyepiece and align the camera with the lens. The included cases fit iPhone 5/5S and iPhone 4/4S.
You can get this from Hammacher Schlemmer for $99.95.