Description and technical information: BPC 10x40 Compact Binoculars. The bread and butter line of medium magnification binoculars, the mid-range BPC mid-mag line gives you all the functionality you need at a great price. The BPC 10x40 are central focusing binoculars intended for viewing at medium distances. The binoculars are the premium platform for observing during walking tours, in hunting, sporting competitions, etc. They are of the highest quality and are lightweight and convenient for carrying. The optics are professionally anti-reflection coated for greater clarity and improved viewing in low light and dusk conditions. The BPC 10x40 Is probably the best pair of binoculars we sell dollar for dollar. We are unaware of any pair of $40 binoculars that provide this type of performance. These are really outstanding for the price. They are light, compact, easy to throw in a pack for hiking or hunting. If you are outdoors a lot and don't own 2-3 pairs of these then you're not having as much fun as you should! Specifications: Magnification - 10x Field of view at 1000 yards - 114 m Objective lens diameter - 40 mm Exit Pupil Diammeter - 4 mm Exit Pupil Distance - 12 mm Maximum resolution - 4.5" Temperature - -30 to +45oC Overall dimensions - 185x160x82 mm Weight - 0.75 kg (1.65 lbs)