This night-vision device can be used to observe objects in the dark and low light situation. The viewing distance in the low light environment will be 0.5 meters to infinite, and 0.5-800 meters viewing distance in the all dark environment. Lens Angle: FOV=10°, diameter is 25mm Display Screen: Inner screen 2.4inch TFT Viewing distance in weak light: 0.5M~infinity IR LED: 3W, 850nm USB Port: Micro USB 2.0 Power: 2000mAh batteries (INCLUDED) Operating temperature: -5℃~50℃ Storage temperature: -5℃~50℃ Item size: 150 * 120 * 60mm / 5.9 * 4.9 * 2.4in Item weight: 280g / 0.6ounce