Specification:

1. 20 brightness settings 10 Red and 10 Green Dot Settings

2. Anti-glare reflective coating on lens

3. Fully Coated Lenses

4. High Quality

5. Mount on any 20mm weaver standard rail

6. Color: Black

7. one CR123A battery (included)

8. Rail Type: 5/8" 20mm Weaver rail