When it comes to high quality optical performance, the Barska Level ED Waterproof Binoculars by Barska deliver. Equipped with Extra Low Dispersion (ED) glass, these binoculars maximize image quality to provide extraordinarily sharp and detailed images. A textured rubber coating provides both protection from external damage and a comfortable non-slip surface for a more secure grip. The optical quality of the Level ED 10x42 binoculars is further enhanced with BAK-4 prisms for increased clarity. FeaturesExtra Low Dispersion (ED) GlassBAK-4 PrismsLarge Focus KnobArgon PurgedAttachment Point for Tripod AdapterIncludes Carry Case, Neck Strap and Lens Covers