National Geographic Expedition Series 8x42 Binoculars

National Geographic Expedition Series 8x42 BinocularsThe National Geographic Expedition Series 8x42 combines 8x magnification with BAK 4 prisms, fully multi coated lenses, and 20. 4mm eye relief the most eyeglass friendly binocular in the National Geographic lineup, with waterproof and fog proof construction for all weather field use. Features 8x magnification with BAK 4 roof prisms bright, high contrast images with a wide, stable field of view Fully multi coated lenses maximum light transmission for

The National Geographic Expedition Series 8x42 combines 8x magnification with BAK-4 prisms, fully multi-coated lenses, and 20.4mm eye relief — the most eyeglass-friendly binocular in the National Geographic lineup, with waterproof and fog-proof construction for all-weather field use.

Features

• 8x magnification with BAK-4 roof prisms — bright, high-contrast images with a wide, stable field of view
• Fully multi-coated lenses — maximum light transmission for clear views from dawn through dusk
• 20.4mm eye relief with twist-up eyecups — exceptionally generous clearance for comfortable full-field viewing with eyeglasses
• Waterproof and nitrogen fog-proof — sealed optics handle rain, humidity, and rapid temperature changes
• 4.5-meter close focus — near enough for garden birds and trail-side wildlife
• Single bridge roof prism design — ergonomic grip and balanced handling for extended observation
• Diopter adjustment — fine-tune focus independently for each eye
• Includes lens covers, neck strap, and carry case — field-ready out of the box

Ideal For

• Eyeglass wearers — 20.4mm eye relief is among the highest in this class, providing the full field without removing glasses
• Birders and wildlife watchers who want the wider field of view and steadier handheld image that 8x provides over 10x
• All-weather hikers — waterproof and fog-proof for trail conditions without worry
• Extended observation sessions — the wider exit pupil (5.25mm) and lower magnification reduce eye fatigue during long glassing