TM‑001/002 Digital LED Infrared Night Viewing Monocular with Display Screen Set 100‑240V Item Type: Digital Telescope with DisplayMaterial: ABSDispaly Length: Approx. 11.6cm/4.6inDispaly Width: Approx. 7.5cm/3.0inFlashlight Length: Approx. 12.8cm/5.0inFlashlight Width: Approx. 2.5cm/1.0in Sleeve Length: Approx. 15cm/5.9inSleeve Width: Approx. 5.2cm/2.0inQuantity: 1Set Structure: Monocular Function Type: Ordinary Telescope Magnification: 1x Objective Lens Diameter: 16mm/0.6in Effective Viewing Distance: 0-300m/0-984.2ft Display: 4.3 in Suitable for observation mirror diameter: 35-45mm/1.4-1.8in Camera without switch: one mode Day and night modes Night ViewingDistance: Up to 100-200m/328.1-656.2ft Uses: day and night Flashlight wavelength: 850NM Flashlight Chip: LED Battery working time: 2-4 hours Maximum visible distance of LED Light: 100-200m/328.1-656.2ft Adapter type: EU Plug Battery Type: 18650x3 (Included) Battery Capacity: 2200mAh Machine Debugging: 1 Fix the display screen and infrared light on the optical sight with a pipe clamp. 2 Loosen the plastic screws, and fix the connecting tube on the back of the eyepiece. 3 Turn on the machine, turn the lens (in the tube) of the machine to adjust the focus, and adjust the crosshairs of the optical sight to make it clear. 4 Adjust the position of the connecting pipe and tighten the screws until the crosshairs are in the center of the display. So far, the debugging of this machine has been completed. 5 In future applications, if the image becomes blurred due to the distance of the object, the sharpness of the image should be adjusted by the side focus roller (and the parallax adjustment roller) connected to the optical sight. Do not move the camera lens, otherwise the crosshairs will be blurred.