The ProSport 10x50 Binoculars from Simmons are at the far end of magnification and objective size for handheld viewing without the wobbles. With that in mind, they provide enough power and light gathering ability to double as astronomical binoculars. The moon's craters - especially along the terminator, Jupiter's satellites and the Pleiades resolved into the Seven Sisters make this size optic very desirable binoculars. Terrestrially speaking, back here on Earth, the large 50mm objective increases light transmission in low-light twilight conditions when the game comes out of hiding. An exceptionally wide 65° field of view gives users an opportunity to scan large areas of panoramic vistas of both the Rocky Mountains and the Milky Way. You'll often be happy that you dropped them in the backpack when you go out on the trail, to the range, or sightseeing around the city. This iteration of the ProSport binoculars is offered here in convenient clamshell packaging.