*Unlimited eye relief makes for quick target acquisition.*11 red dot brightness settings provide optimal visibility in any light conditions.*A shockproof aluminum body displays extreme durability.Upgrated: From 3-4MOA to 2MOAWhether the red dot can be seen or not depends on the brightness of your environment. If you set the red dot at settings 1-5, please use the dot sight under dim environment or cannot see the red dot.There's nothing like a red dot for fast target acquisition and accuracy in dim conditions.The 1x25 red dot is engineered with Amber-Bright optics to help you quickly distinguish a brown tree and a brown critter.This sight can be easily used with both eyes open, increasing the shooter's awareness of the surroundings and providing faster target acquisition. Due to the parallax free design, the dot follows the movement of the user's eye while remaining fixed on the target without centering.