UPGRADED MULTILAYER OPTICAL LENS - Full multi-coated lenses can improve light transmission, increase contrast, clarity, brightness and color. The observation effect is clearer, and the night observation is more obvious. Even at night, you can restore colors and adjust brightness.CAN BE USED BOTH DAY AND NIGHT - The night vision goggles have a built-in infrared illuminator, which can be used in a full dark environment, in a full dark environment and up to 1312ft (400m) range distance. The filter cover needs to be added during daytime use, and the color reproduction degree is high.POWERFUL CLEAR 2X DIGITAL MAGNIFICATION AND 2X EYEPIECE MAGNIFICATION - 2x eyepiece magnification and 2x digital zoom can not only observe every detail in the distance but also maintain a safe observation distance.LARGE DYNAMIC WIDE SCREEN ANDLONG BATTERY LIFE- The 320*240 resolution color wide LCD screen display brings you full view and eyes comfort.Can use 8 AA batteries (not included) for operation or USB link power supply, you can monitor for a long time without worrying about the battery running out.