Coated lenses improve light transmission offering improved clarity and brightnessthe solid frame is covered in A textured rubber for A reassuring gripLarge central rubber focusing wheel is easy to turn even when wearing glovesTwist-and-click rubber eye cups offer easy positioning of eyes at the correct point - especially useful for those who wear glassesRetained rubber object and eye-piece lens protective capsDust and water-proof assembly ensures long-lasting performanceNitrogen-filled chambers ensure zero internal foggingDiopter right eyepiece adjustment for perfectly balanced focusingNeoprene neck strap relieves fatigue over prolonged useComes complete with padded carry bag and soft-touch lint-free cloth TECHNICAL SPECIFICATIONMagnification: 10xObjective Diameter: 42mmExit Pupil Diameter: 4mmExit Pupil Distance: 13.6mmField of view: 304ft/1000ydsClose Focal Length: 2.5mType of Prism: BK7 K9Dimension: 150mm(L) X 126mm(W) X 52mm(H)Weight: 536g