Ideal magnification for hunting at long ranges and wide field of view. Fully multi-coated lenses for maximum light transmission and optimum brightness Heavy-duty, 100% waterproof/fogproof construction 2 Step twist-up eyecups allow quick adjustment for optimum eye relief Large center-focus knob for precise focusing - even when wearing gloves Trim, ergonomic shape for easy, all-day use Textured, non-glare, non-slip rubber armor absorbs shock Diopter adjustment for precise and reliable adjustments