The Nikko Stirling Nighteater 4-16x44 LRX Scope lens coatings used are a key factor in the clarity achieved by the Nighteater range. The Microlux ETE coatings on all lenses improves light transfer to the hunter's eyes. Allow for faster more accurate shooting in the low light conditions as the illuminated reticle is more easily seen by your eyes. The brightness is adjustable through 12 settings allowing you to set the brightness to suit the conditions encountered while hunting. Key features include stylish built in sunshade, fast focus eyepiece, waterproof as each scope is tested to 1.5 meters, shock tested more than 200 times to the equivalent of 240 kilograms and nitrogen filled for fog proofing. Actual magnification is 4-16. Objective diameter is 44 millimeters. Field of view at 100 yards is 27.5-7.9. Eye relief is 3.5 Inch.