Designed for serious glassing, with exceptional edge-to-edge clarity, sharp detail enhancement, ultra-clear brightness, and true colour representation. We designed these binoculars with our revolutionary E2ES lens system that gives you a flat field of view. We included ED Glass which results in a clearer and sharper image for your eyes. Our state-of-the-art ESP (Enhance Spectral Prism) dielectric coating that reflects 99% of the light through the prism assembly. We use a Magnesium chassis to reduce weight while keeping the chassis rugged to withstand the scrapes and bumps of constant use.Features:- E2ES System- Edge 2 Edge Sharpness system- ED Glass- High-definition glass- ESP Dielectric Coating- Enhanced Spectral Prism Dielectric Coating- Lightweight Magnesium Chassis- XPL Coating- Xtra Protective Layer coating- Phase Corrected prisms- ABBE prisms- Advanced FMC- Long Eye Relief- Close Focus- Twist Up Eyecups- Waterproof- Argon PurgedSpecifications:- Power: 15X- Objective Lens Diameter: 56mm- Eye Relief: 18.5mm- Field of View Angular: 4.5 degrees- Field of View M @1000 METERS: 78.4m- Close Focus: 4m- Interpupillary Distance: 56mm 74mm- Weight: 1281.4g