New Mini 30x60 Day Night Vision Zoom Binoculars Telescope 126m to 1000m Folding General use: Hand-held binoculars range from small 3  10 Galilean opera glasses, used in theaters, to glasses with 7 to 12 diameters magnification and 30 to 50 mm objectives for typical outdoor use. Military: There are binoculars designed specifically for civilian and military use at sea. Hand held models will be 5 to 7 but with very large prism sets combined with eyepieces designed to give generous eye relief. Astronomical: 10x is generally considered the practical limit for observation with handheld binoculars. Binoculars more powerful than 1570 require support of some type. 25  150 binoculars adapted for astronomical use Package included: 1 x Binoculars Telescope 1 x Carry Case These have protection from ultra violet rays and sun radiation