The RMR Type 2 is designed with a patented housing shape that absorbs impacts and diverts stresses away from the lens to increase durability. It also offers redesigned and upgraded electronics that have been proven to perform when mounted on slide ride pistols and other small arms. It s suitable for military, law enforcement, concealed carry self-defense, target shooting, and hunting applications. The battery powered LED RMR Type 2 features a sensor, which automatically adjusts the brightness of the illuminated red dot based on ambient lighting conditions. The 3.25 MOA dot in the RM01 is the most versatile and popular of all RMR dot sizes. The dot is small enough to allow accurate shooting at range while also being big enough locate quickly. Magnification: 1x Reticle: 3.25 MOA Dot Reticle Color: Red Batteries: 1 CR2032 Lithium Battery