Sig Sauer Sierra 3BDX Ballistic Data Xchange Rifle Scope 6.5-20x 52mm Side Focus BDX-R1 Digital Ballistic Reticle Features: Integrated Ballistic Data Xchange (BDX). A rangefinder and riflescope system that uses ballistics, environmental conditions and Bluetooth to illuminate the exact holdover dot Automatic holdover dot on a Digital Focal Plane, combining second focal plane stadias, with an OLED illuminated ballistic holdover dot that automatically scales with zoom to subtend on target at any magnification level Motion Activated Illumination (MOTAC) powers up when it senses motion and powers down when it does not. Provides for optimum operational safety and enhanced battery life SpectraCoat highly efficient, untra-wide broadband, anti-reflection lens coatings reduce surface reflections to extremely low levels across the entire visible spectrum providing superior light transmission KinETHIC kinetic energy transfer indicator provides assistance in assuring an ethical hunt by indicating when energy on target drops below a threshold that can be set by the hunter using the Sig BDX App Auto LevelPlex automatically increases digital level sensitivity on longer shots Disguised within the form factor of a traditional riflescope lies the power of the Sig Sauer BDX Ballistic Data Xchange. The SIERRA3BDX riflescope provides the hunter an illuminated auto-holdover dot on targets when coupled with a BDX capable KILO rangefinder. Featuring exceptional SpectraCoat lenses, LevelPlex digital anti-cant, and KinETHIC kinetic energy transfer indicator, the SIERRA3BDX is incredibly simple to use. Range a target, put the holdover dot on target, pull the trigger, impact. Sig Sauer's BDX, just CONNECT THE DOT! Finish Black Waterproof Yes Weight 25.9 Ounce Tube Diameter 30mm Power Variability Variable Minimum Power 6.5 Maximum Power 20 Adjustment Click Value 1/4 MOA Adjustment Type Click Exposed Turrets No Finger Adjustable Turrets Yes Turret Height Medium Fast Focus Eye Piece Yes Lens Coating SpectraCoat Rings Included No Sun Shade Included No Lens Covers Included No Reticle BDX-R1 Reticle Construction Glass Etched Illuminated Reticle Yes Battery Type CR2032 Holdover Reticle Yes Reticle Focal Plane Location 2nd Parallax Adjustment Side Focus Fog Proof Yes Shock Proof Yes Overall Length (A) 14.25 Inches Objective Diameter (G) 2.38 Inches Eyepiece Diameter (H) 1.61 Inches Objective Lens Diameter 52 Millimeter Eye Relief 4.21-3.43 Inches Exit Pupil Diameter 6.1-2.6 Millimeter Field of View @ 100 Yards Minimum Power 14.1 Feet Field of View @ 100 Yards Maximum Power 4.7 Feet Maximum Windage Adjustment 40 MOA Maximum Elevation Adjustment 40 MOA