Opticron Explorer 8x21mm Roof Prism Compact Binocular Non-Slip Rubber Covering Black. Offering an extensive IPD range from 36mm to 71mm these Binoculars designed by Opticron are truly an all ages option that is bound to impress. The rubber armored exterior makes gripping the Opticron Explorer 8x21mm Roof Prism Adjustable Binocular easy in all weather conditions and comfortable enough to use for hours. A close 6.6ft close focus is accessible with the ribbed focus wheel and the twist-type retractable eyecups and eyerelief provide a comfortable viewing experience for any user with or without eyeglasses making the versatile Opticron Explorer 8x21mm Roof Prism All Ages Binocular a stellar option for the whole family. Specifications for Opticron Explorer 8x21mm Roof Prism Binocular: Manufacturer: Opticron Color: Black Magnification: 8 x Objective Lens Diameter: 21 mm Prism System: Roof Prism Material: BK-7 BAK4 Image Stabilizer: No Eye Relief: 14 mm Exit Pupil: 2.6 mm Field of View Linear: 324 ft at 1000 yds Field of View Angle: 6.2 degrees Optical Coating: Multi-Coated Binoculars Focus System: Center Focus Twilight Factor: 13 Interpupillary Distance: 1.4 - 2.8 in Close Focus: 6.6 ft Weather Resistance: None Water Resistance Level: Waterproof Length: 3.6 in Weight: 6.88 oz Finish: Non-Slip Rubber Covering Fabric/Material: Polycarbonate Aluminum Alloy Package Type: Box Included Accessories: Lens Caps Soft case with wrist strap Magnification Type: Fixed Features of Opticron Explorer 8x21mm Roof Prism Versatile Binocular: Limited Lifetime Warranty Compact roof prism optical design Weatherproof Multi-coated lenses with high reflection coated prisms Twist type retractable eyecup assembly Ideal for all ages Fully rubber armored for extra comfort and grip Folds to 3.6x2.5 for easy transport and storage Ribbed focus wheel with 6.6ft close focus Good field of view with or without glasses Package Contents: Opticron Explorer 8x21mm Binocular Opticron 30616: Explorer 8x21mm Roof Prism Compact BinocularBlack