The firefield lm 10x42 binocular features roof prism optics, this device brings the target and action closer than ever, while its large, multi-coated objective lenses obtain vivid images.Whether used during bird watching, scanning the field of battle, or tracking long-distance prey, the ergonomic and user-friendly lm 10x42 binocular offers outdoor enthusiasts a cost-effective viewing solution with the quality that comes with the firefield name.The lm 10x42 binocular is equipped with retractable eye cups for ultimate comfort and customization.Nitrogen-filled and water resistant, this binocular is built for reliability; ensuring users get the most out of every use in the field.The exterior is coated with a rubberized armor for a solid grip and protection against minor impact.A durable nylon carrying case is included for secure travel.Magnification: 10xObjective: 42mmField Of View: 3.58 ft @ 1000 ydsEye Relief: .39"Exit Pupil Diameter: 4.20mmPrism Type: BaK 7 RoofWeight: 15 ozFinish: BlackOptic Coating: Fully Multi-CoatedProofs: Weather Proof