This Night Vision Depot system may be one of the easiest to use systems on the market today. It can be easily mounted in front of your bore sighted day optics ranging from 1-12 power without any adjustments necessary. Running on 2 AA batteries it will operate for approximately 40 hours. Without any magnification this Night Vision Depot system is the perfect night time optic to mount in front of your day optic. Night Vision Depot PVS-22 - ITT Gen III 64LP Min Resolution -BNS Night Vision Weapon Sight with Pinnacle White Phosphor Tube NVD-BNS-WP