Features:Comes with 8x magnification 21-Millimeter lens diameter， 7.8-Ounce weightEasy to use， just point and focusRubber eye cups and nonslip rubber armor absorbs shockAdjustable eyepiece distance(from 35mm to 75mm/1.4" to 3.0")， suitable for both adults and childrenSpecification:Material: Rubber non slip surfaceMagnification Power: 8xAngle range:131M /1000M Prism Type: BK7Lens coating: FMC green film for objective lens and FMC blue film for eye lensThe distance between the lenses: approx. minimum 35mm， maximum 75mm， suitable for children and adultsObjective lens diameter: approx. 21mm/0.8"Exit pupil diameter: approx.2.6mm/0.1"Exit pupil distance: approx.11mm/0.4"Close Focusing Distance: approx.2.13/7.0ftDimension: approx. 105x90x25mm/4.1x3.5x1.0" (unfold size) Weight: approx.220g/7.8ozHow to focus:Focus left eye first with Power Zoom focus with right eye shut， then open right eye and close left and adjust the diopter (twist right eyepiece) for right eye focus. Once set， you will experience great performance from your Bushnell binocularsPackage Includes:1 x Mini 8x21 Binoculars1 x Dust Cloth( Marked: Tera)1 x Instruction(in English)1 x Case1 x Original Packing