This drains the battery faster by around 40 percent, making the battery only last about 2 minutes from the original amount of about 3 minutes 20 seconds, but this makes it easier to see in very dark areas and is of great use when stealth isn't necessary. If the player uses the flashlight and the night vision together, they can extend the range of the NVG and see better. When the goggles are switched on, the player is much harder to detect than when they have the flashlight turned on. Night vision goggles are used to sneak through areas or seeing traps when the player cannot risk using their flashlight.