Celestron trailseeker binocular 10x42 in blackolive give a high level outdoor performance which makes them perfect for nature watching the trailseeker has phase and dielectric coated bak 4 prisms which dramatically increase light transmission through the prism system for unrivaled image quality and views compared to other binoculars in its price range the trailseeker offers a better close focus along with a wider field of view with its lightweight magnesium alloy frame the trailseeker i