If smaller means better, then Nikon’s all-new ACULON Rangefinder is at the top of its class. With its ultra-compact size (3.6”x2.9”x1.5), this new rangefinder redefines “portability” and is small enough to rival most smartphones. Weighing just 4.4 ounces (without batteries), the ACULON Rangefinder is built to be taken everywhere. The ACULON rangefinder is small enough to fit in almost any pocket or pack. It is the ultimate, take-everywhere rangefinder. Multilayer coatings provide an even higher light transmittance across the entire visible light spectrum. This minimizes the loss of light due to reflection, thereby ensuring a more natural, clearer view. Measurement Range : 6 - 550 yds - Increment Reading : 1 yds - Magnification : 6x - Angular Field of View (Real) : 6 degrees - Angular Field of View (Apparent) : 43 degrees - Viewfinder Display : meters/yards - Eye Relief : 18mm - Power Source : 1 CR2 Lithium Battery - Weight w/o Batteries : 4.4 oz - Objective Diameter : 20mm - Use : Gun Hunting, Bow Hunting , Target Shooting.