Celestron 10x42 Nature DX ED Binocular

ED OBJECTIVE LENSES: Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration or colour fringing, a visual defect common in binoculars, so you'll enjoy razor-sharp images with outstanding, true-to-life colour VERSATILE, ALL-AROUND BINOCULARS: These binoculars are for birdwatching, nature observation, stadium, arena, or anywhere you want a close-up view of the action without sacrificing brightness or detail BaK-4 PRISMS: The prisms inside Nature DX ED feature BaK-4 glass with phase coatings applied to maximise light transmission DURABLE, WATERPROOF, AND NITROGEN PURGED: A rubber-armoured, polycarbonate housing protects your binoculars from damage and stands up to even the toughest weather conditions, nitrogen purging prevents internal fogging of the lenses 6.5' CLOSE FOCUS: Suitable for birding