15-power astronomical binoculars with a rugged housing provide high-resolution views with a pleasing flat-field Fully waterproof and nitrogen purged construction prevents lens fogging High-quality BAK-4 prisms and advanced multi-coatings on all optical surfaces provide maximum light throughput for bright views rich in contrast The high-power 15x70 Resolux binoculars have a nice 44-degree field of view for big views Attachment to a tripod with the included tripod adapter is recommended for extended use :
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