Night Owl Optics 5-Power NOXM50 Night Vision Monocularbr High quality all-glass optics - objective and ocular lenses One solid focusing ring Single hand operation 500x light amplification br Generation 1 Magnification 5x Lens Diameter 50 mm Angular Field of View 15 degrees Field of View at 200 ft 39 ft Dimensions inches 775L x 379W x 248H br Weight without batteries 16 oz Power Supply not included One 3-Volt Lithium Battery Minimum Focus Range 57 feet Built-In Infrared Yes br The Night Owl NOXM50 with 5X magnification is the most rugged monocular in our line Features an extended body with protective finish The unit also comes with a hand strap and robust molded plastic focus ring br Uniquely designed for comfort and easy operation of both power and Infrared buttons