Product parameters IR transmitter type: Independent transmitter Size: 5 inch LCD Battery: 18650 (without battery) Applicable for Sight Lens Diameter: 35-45mm Night vision distance: night vision can reach 100 meters / 200 meters Day and night with dedicated infrared flashlight Note: This item does not include the internal battery. Packing details: 25mm x1 lens 5 LCDx1 camera 850mm infrared flashlight x1 25 mm installation x 1/30 minute installation The adapter should be fixed to the CCD lens with its own small screws. You can use round glue.