1、Infrared lights are generally auxiliary night viewing devices, the light is not shot out, but the eyes can be seen at close range. 2、Used both the day and night, colored during the day, automatically switch to black and white mode at night due to insufficient light. 3、Infrared flashlight light is unseen to us and animal eyes, only our night viewing monocular can see, convenient for see animal. 4、A total of 3 18650 lithium batteries (included) are used, large capacity and high performance. 5、The tube connector is suitable for 35‑45mm/1.4‑1.8in diameter eyepieces, the largest suitable camera lenses is 28mm/1.1in. Item Type: Digital Telescope with Display Material: ABS Dispaly Length: Approx. 11.6cm/4.6in Dispaly Width: Approx. 7.5cm/3.0in Flashlight Length: Approx. 12.8cm/5.0in Flashlight Width: Approx. 2.5cm/1.0in Sleeve Length: Approx. 15cm/5.9in Sleeve Width: Approx. 5.2cm/2.0in Quantity: 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. 1 x Adapter 1 x Diaplay 1 x Flashlight 1 x Manual 1 x Sleeve 3 x 16850 Battery 1 x Battery Box 1 x Wrench 1 x Stand 2 x Accessory 1 x Tape