RIFLE AND THE SCOPE ARE NOT INCLUDED Description Display size 4.3 inch Resolution 480*272 Scanning frequency 60Hz Minimum illumination 0.0001 LUX/F1.2 Signal to noise ratio ?46dB Operating temperature -20?-50? Adapter battery 18650 Lithium battery No battery in the package Infrared light 850mm Infrared lamp power 3W Maximum clamping range 45mm Commissioning of the Machine: 1.Secure the display and IR light on the optical sight with the pipe clamp. 2. Loosen the plastic screws (totally eight), and centrally fix the connecting tube in the rear of the eyepiece of the optical sight. 3. Turn on the machine and rotate the lens of the machine (inside the tube) to adjust the focus and adjust the cross line of optical sight to be clear. 4. Adjust the position of the connecting tube and tighten the screws till the cross line in the center of the display. And the commissioning of the machine is complete till now. 5.If the image is blurred caused by the different distances of the objects, the image clarity will be adjusted by side focus roller.