What a great little unit at a fantastic value and with ton's of features you typically only find on the higher priced units. The Stealth Tactical series Illuminated Red Dot exclusively made with Twist Cap technology an easy to use objective adjustment that controls image brightness. It delivers immaculate performance with custom construction. A sleek and scientifically advanced Illuminated Red dot sight. Configured for precise accuracy from years of research. - Glass Fully Multicoated - Multi-purpose Twist-Cap technology - 5/8 Weaver style rail - Illuminated Red Dot - Limited One-Year Warranty - Packaging: Metallic Gift Box - Black Matte Finish - Magnification: 1X - Obj. Lens Diameter (mm): 30 - Exit Pupil Range (mm): 30 - Field of View @100 Yds: 68 - Optimum Eye Relief (in): Unlimited - Parallax Setting: 50 yds. - Click Adjustment Value: 1/2 - Adjustment Range: 45-45 - Weight (ounces): 5.00