Micro sub-compact has a 22mm X 17mm multi-coated objective lens has a 3-MOA Green Dot reticle for fast aiming. Features include digital push-button brightness controls, 10 brightness settings, and compatible with optic-ready pistols and has a common lug and bolt pattern for maximum compatibility. Includes a Picatinny rail mount and locking windage and elevation adjustments. This unit is CNC-machined from aircraft-grade aluminum that is ultralight. There is an auto off feature that preserves the battery life, unlimited eye relief, water resistant with sealed O-ring design, shock and fog resistant. ABS hard-shell cover included and 3V CR2032 battery.