Explore Scientific 10x25 National Geographic Exped

Palm-sized but full-featured - the 10x25 National Geographic Expedition Series Binoculars from Explore Scientific are useful for travel - sports - music festivals - and all-around use Fully multicoated lenses and BAK4 prisms optimize the view - and twist-up eyecups make it easy to see the full image - with or without eyeglasses on The Expedition Series binoculars are waterproof and purged with dry nitrogen gas to prevent internal fogging from sharp temperature changes

Features: 331' Field of View, Diopter Adjustment, Nitrogen-Filled, Fog & Waterproof, Twist-up Eyecups, Fully Multicoated Lenses, BAK4 Roof Prisms

Prism Type: Roof

Magnification: 10x

Objective Lens Diameter: 25 mm

Angle of View: 6.8 degrees (Actual)

Field of View: 331' @ 1000 yd / 109.9 m @ 1000 m

Minimum Focus Distance: 19.7' / 6 m

Exit Pupil Diameter: 2.5 mm

Eye Relief: 10 mm

Diopter Adjustment: Yes

Focus Type: Center

Fogproof: Yes - Nitrogen Filled

Environmental Resistance: Water-Resistant (Unrated)