850nm Infrared LED IR Night Vision Riflescope Hunting Scopes Optics Sight Hunting Camera Hunting Wildlife Night VisionSPECIFICATIONS Brand Name: Bestsight Type: RIFLE Function: Lens Model Number: night vision battery model: 18650 Lithium battery Commissioning of the Machine: 1. Secure the display and IR light on the optical sight with the pipe clamp. 2. Loosen screws , 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