Description and technical information: Baigish-21 Night Vision Binoculars w/ Embedded IR. The Baigish-21 is a solid pair of night vision binoculars. It is moderately priced, provides a good clean image and is durable. The factory is one of the top producers of military optics in Russia and is known for its quality optics. With the embedded infrared laser, you have full functionality even in complete darkness. They are a very good choice for stationary viewing as well as for use in the field. Specifications: Image tube - GEN I Magnification - 3x Angle of view - 9o Observation range -250 m Diopter adjustments - -4/+4 Supply voltage - 6v (4xAA) Battery Life - 4 hours Infrared Illuminator - Built-in Overall dimensions - 234x131x76 mm Weight - 1.45 kg