Feature A Precise Adjustments: 3 MOA Dot with Audible 1 MOA Click Value Ensures Accuracy and Ease of Use A Adaptive Brightness: 6-Level Center Dot Settings Suit a Wide Range of Lighting Conditions A Smart Power Saving: Built-In Motion Sensor Extends Battery Life by Auto Power Control A Quick Versatility: Quick Release Picatinny Mount Enables Fast and Easy Attachment or Removal Video Specification Magnification: N/A Window Lens Size Dia: 25 mm Parallax: Free (