When maximum low light visibility is a must shooters can turn to the Fullfield 3-12x56mm. A large light gathering objective lese and illuminated reticle produce the most visible field in lowlight conditions. Ballistic E3 and 30mm tube. Specifications for Burris Fullfield IV 3-12x56 mm 30 mm Tube Second Focal Plane (SFP) Rifle Scope: Manufacturer: Burris Objective Lens Diameter: 56 mm Magnification: 3 - 12 x Reticle: Ballistic E3 Tube Diameter: 30 mm Reticle Focal Plane: Second Focal Plane (SFP) Exit Pupil: 5.4 - 13.7 mm Illumination Color: Red Finish: Matte Field of View, Linear: 40 - 10 ft at 100 yds Eye Relief: 3.5 - 3.8 in Color: Black Weight: 24 oz Adjustment Click Value: 1/4 MOA Length: 14.5 in Adjustment Type: MOA Parallax: Free Illumination Type: LED Battery Type: Lithium Fabric/Material: Aircraft Grade Aluminum Lens Material: Glass Water Resistance Level: Waterproof Shockproof: Yes Fogproof: Yes Package Type: Box Magnification Type: Variable Condition: New W/E Travel at 100 Yds: 100/100 MOA Features of Burris Fullfield IV 3-12x56 mm 30 mm Tube Second Focal Plane (SFP) Rifle Scope: Large 56mm objective for better light transmission Illuminated reticle for low light performance 30mm tube offers more adjustment range Package Contents: Burris Fullfield IV 3-12x56 mm 30 mm Tube Second Focal Plane (SFP) Rifle Scope Manual Lenscloth Tool(s) Burris Forever Warranty (Non-Thermal Optics) and Three Year Limited Warranty (Thermal Optics) All Burris Optics (with the exception of Thermal products) are covered by the Burris Forever Warranty™. Burris Company, Inc. ("Burris Co. or "we") warrants that its Burris Optics products (nonthermal optics products) will be free from manufacturing defects for the product's lifetime from the date of purchase or delivery (whichever occurs later). Burris Co. also warrants that its Burris Thermal Optics products will be free from manufacturing defects for a period of 3 years from the date of purchase or delivery (whichever occurs later) by the original purchaser. Warranty information and warranties are supplied solely by the manufacturer, and not this retailer. This retailer publishes information from the manufacturer for information purposes only, and the manufacturer is solely responsible and liable for any warranty information and warranties published by this retailer. Please reference the appropriate manufacturer documents or reach out to the manufacturer directly for full warranty terms and effective dates.