The Vivitar 4x30 CS-430 Classic Binocular, based on porro prisms, offers a 4x magnification power. An exit pupil diameter of 7.5mm ensures that the binocular can be used in low-light conditions. The rugged product is suitable for watching sports events, concerts, and general outdoor viewing.
Eyecups of the Weather-resistant Binocular can be twisted up so that eyeglass/sunglass wearers can comfortably look through the binocular without taking off their glasses.
Multicoated high-definition lenses of the binocular help reduce glare, ensuring clear image reproduction. The binocular features 2.3º angular field-of-view and 60' (18.28m) linear field-of-view @ 1000 yard (914.4m). It's features 6.56' (2m) minimum focus distance.