The ROMEO5 compact red dot sights are designed to provide civilians and armed professionals with a robust 1x aiming solution that excels in any situation. Featuring ultra-low parallax, these sights ensure that the point-of-aim is precisely the point-of-impact, with the red dot remaining parallel to the bore of your firearm, regardless of your viewing angle relative to the sight's optical axis. Enjoy unlimited eye-relief, allowing you to acquire the aiming point and target effortlessly, no matter the position of your eye behind the sight. The CR2032 battery, easily accessible from the side, enables swift replacement and offers an impressive lifespan of 50,000+ hours or more. Count on dependable waterproof performance, rated IPX-7 for complete water immersion up to 1 atmosphere, and fog-proof capabilities to maintain clarity in challenging conditions.