The perfect companion for the outdoor explorer the nature dx 10x56 binoculars join celestrons latest nature series with multi coated optics bak 4 prisms and a fully waterproof exterior the 10x magnification and 56mm diameter make them suitable for low light and general outdoor viewing while its strong polycarbonate construction means theyre durable and lightweight the bak 4 prisms with phase coating increases contrast and resolution for sharper and more detailed images the celestron nat