Dagger Defense DDHB Red Dot Reflex Sight, Reflex Sight Optic and Substitute for Holographic red dot Sights Both red and green dot, four position reticles Equipped with a locking set screw to stabilize your sighting adjustments (use only if needed and turn 1-2 times clockwise only) APERTURE33mm LENGTH82mm WEIGHT 291g FIELD OF VIEW 15.8m@100m 1x Type Red Dot & Green Dot Sight scope, CR2032 Battery- 1x Instruction Manual- 2x Allen Wrench- 1x Lens Cleaning Cloth The DDHB red dot is constructed of aircraft grade aluminum and has fan ergonomic design which saves space on your rail for other accessories. Equipped with a locking set screw to stabilize your sighting adjustments (use only if needed and turn 1-2 times clockwise only) APERTURE33mm LENGTH82mm WEIGHT 291g FIELD OF VIEW 15.8m@100m RAILpicatinny The DDHB includes:1x Type Red Dot &amp; Green Dot Sight, CR2032 Battery- 1x Instruction Manual- 2x Allen Wrench- 1x Lens Cleaning Cloth The DDHB red dot comes in a black finish Retical color selector (red or green) Fade adjustment (brighness) Battery compartment for CR2032 batter (included)