COMPACT Baigish 21 russian military night vision binoculars / residual light amplifier. Originaly developed as a military binocular, the B-21 Night Vision Binoculars are versatile and offer hi performance. The B-21 features special durable construction, smooth coated optics, bright illumination and hi power infrared technology. Excellent for use by outdoorsmen, hunters, campers, and professionals. Steroscopic night vision image quality are the hallmark of this model with its unique Gen 1+ image intensifier. Specifications: Magnification 3.0 Field of view 9 degrees Tube Gen. 1+ Gain 30,000 Resolution 23 lin/mm Viewing distance up to 250 meters under clear starry night conditions Viewing lens diameter 85 mm Power supply 2 AA batteries Diopter +4 to -4 dptr Dimensions 234 x 131 x 76 mm Weight 2.3 lbs (1.45 kg) The item is like new, you have a good view.