Product Name: Gen2+ Security Night Vision Monocular for Nightwalker Model NO.: D-M2021 Customized: Customized Shell Material: metal Operation Principle: Infrared Night Vision Kind: Image Intensifier Night Vision Structure: Monocular Style: Handheld Application: Civil Trademark: Daking Transport Package: Soft Protective Bag or Hard Shipping Case Specification: 140*77*56 Origin: Guangdong, China Product Description Gen2+ security night vision monocular for nightwalkerNight Vision Specifications:ModelD-M2021IITGen2+Resolution (lp/mm)45-64Photocathode typeS25S/N (dB) 12-21Luminous sensitivity (μА/lm)450-600MTTF (hrs)10000Magnification1xFOV (deg)40Detection distance (m)220-280Diopter (deg)+5/-5Lens systemF1.2, 25.8mmRange of focus (m)0.25--∞Dimensions (mm)140x77x56Weight (g)373Power supply (v)2.0-4.2VBattery type (v)1 3V CR123A lithium batteryBattery life (hrs)80(w/o IR)40(w IR)Operating temperature (ºC)-50/+60Storage temperature(ºC)-50/+70Environmental ratingIP66