2MOA RedDot for precise aiming - 22mm multicoated objective lens - Digital push button brightness controls - 10 brightness settings - Remembers last used brightness settings when powering on - Includes low and high Picatinny / Weaver rail mounts for maximum compatibility - Locking windage and elevation adjustments - Wide field of view - CNC machined from aircraft-grade aluminum - Unlimited eye relief - Autooff feature preserves battery life (4 hour idle from last button push) - Nitrogen gas filled - Rubber lens cover included - Battery included (1.5V AAA)