Leica 40253 Ultravid BR 10x25 Compact BinocularExperience Unrivaled Clarity in a Compact Design The Leica Ultravid BR 10x25 binocular offers exceptional optical and mechanical performance in a robust, waterproof design. With enhanced eyepieces and Leica's AquaDura lens coating, these binoculars deliver sharp, bright images in any environment. Exit pupil: 2. 5 mm Twilight factor: 15. 8 Field of view at 1,000 yds m: 273 ft 90 m Eye relief: 15 mm Eyepieces: For eyeglass wearers: yes Waterproof: up to