Pentax 8x25 U-Series UP WP Compact Binoculars

Pentax's highly portable and functional 8x25 U-Series UP WP Compact Binoculars employs an innovative unibody design that locks the objective lenses into the body with the eyepieces set on a synchronized dual-axis mechanism that ensures they stay symmetrical in relation to the center axis of the optic when adjusting the interpupillary distance The 25mm objective lenses are fully multicoated to reduce reflection and maximize light transmission to produce the brightest images possible Aspherical lens elements virtually eliminate distortion - especially around the edges - and corrects for lens astigmatism which can prevent sharp focusingDesigned for easy carrying and stowing - the binocular features a lightweight fiberglass reinforced polycarbonate housing that is corrosion and impact resistant The housing material is also temperature-resistant allowing for its use in extreme climates while reducing expansion and contraction wide temperature variations can cause - which can make the optical components move out of collimation over time Its optical tubes are nitrogen-filled and O-ring sealed so they can are submersible to 33' - as well as fogproof in all weather conditions

Features: BAK4 Porro Prisms, Fully Multicoated Optics, Angle of View: 50°, Nitrogen-Filled, Water and Fogproof, Reinforced Polycarbonate Housing, Synchronized Eyepiece Adjustment, Center Focusing, Standard 1/4-inch -20 Tripod Mount, Twist-Up Eyecups

Prism Type: Porro

Magnification: 8x

Objective Lens Diameter: 25 mm

Angle of View: 6.2 degrees (Actual)

Field of View: 325.5' @ 1000 yd / 108.5 m @ 1000 m

Minimum Focus Distance: 6.2' / 1.9 m

Exit Pupil Diameter: 3.1 mm

Eye Relief: 15 mm

Diopter Adjustment: Yes

Focus Type: Center

Fogproof: Yes - Nitrogen Filled

Environmental Resistance: Water-Resistant (Unrated)

Dimensions: 4.6 x 4.3 x 2.7-inch / 11.7 x 10.9 x 6.9 cm

Weight: 12.3 oz / 348.7 g