Hawke Sport Optics Endurance ED Compact 15-45x60mm Angled Spotting Scope Black. Constructed with ED glass reducing chromatic aberration. Specifications for Hawke Sport Optics Endurance ED Compact 15-45x60mm Spotting Scope: Manufacturer: Hawke Sport Optics Color: Black/Green Magnification: 15 - 45 x Objective Lens Diameter: 60 mm Eye Relief: 0.8 in Exit Pupil: 1.3 - 4 mm Field of View Linear: 78 - 147 ft at 1000 yds 147 - 78 ft at 1000 yds Field of View Angle: 1.5 - 2.8 degrees Optical Coating: Fully Multi-Coated ED Glass: Yes Scope Body Type: Angled Minimum Focus Distance: 2.5 m Lens Material: ED Glass Close Focus: 2.5 m Weather Resistance: Yes Water Resistance Level: Waterproof Length: 12.1 in Weight: 31.6 oz Finish: Matte Fabric/Material: Rubber Prism Material: BAK4 Prism System: Porro Features of Hawke Sport Optics Endurance ED Compact 15-45x60mm Spotting Scope ED glass Fully multi-coated prisms Dielectric coated for increased reflectivity Dual focus knob (course and fine) 3x ratio eyepieces with twist-up eye cups and retractable sunshades Nitrogen purged Waterproof Fog proof Package Contents: Hawke Sport Optics Endurance ED Compact 15-45x60mm Spotting Scope Lens covers cleaning cloth stay-on soft case Hawke Sport Optics 56194: Endurance ED Compact 15-45x60mm Angled Spotting Scope Black