Promaster Infinity Elite 8X32 Compact Binoculars Power: 8X Objective Lens Diameter: 32mm Type of Prism: BAK4 Roof, Number of Lens: 8 elements in 6 groups Prism Coating: Silver and phase coated, Lens Coating: TRANSBRIGHT and full broadband multicoatings Exit Pupil Diameter: 4.1mm Eye Relief: 14.7mm, Diopter System: Left eyepiece -4 Field of View: 8.13 - 426 ft. @ 1000 yds. Minimum Focusing Distance: 6.56/2M Waterproof: 1.5m for 3 minutes Weatherproof: Nitrogen filled fog proof Weight: 18.6 oz. Includes case and strap