What is smaller than a
comact binocular? In general, a compact binocular is typically defined as a
binocular with a 20-25mm objective (second binocular number). Are there even smaller binoculars than compacts? Yes, there are even smaller binoculars. I call them "purse" binoculars, but I think the term "
mini" binocular would be more gender correct. Good example is the
Nikon 5x15 Titanium. It makes your average 10x25 compact binocular look huge by comparison.