The Meprolight RDS PRO V2 Red Bullseye supports multiple selections of aiming patterns. It features 16 brightness positions and runs for thousands of operating hours while utilizing a single AA battery. It also has a large transparent display window and LED technology for low power consumption. The auto shut-off mechanism allows for additional energy savings. This red dot sight is compatible with all standard NVGs and magnifying scopes and is MIL-STD qualified.