Sig Sauer Electro-Optics Sierra3 BDX 2 Black Anodized 4.5-14x50mm 30mm Tube Illuminated BDX-R1 Reticle The BDX Sierra3 riflescope provides the hunter an illuminated auto-holdover dot on targets when coupled with a BDX capable KILO rangefinder. 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. Featuring illuminated BDX-R1 digital reticle with 10 daylight illumination settings, exceptional SpectraCoat lenses, LevelPlex digital anti-cant and KinETHIC kinetic energy transfer indicator. Integrated BDX Ballistic Data Xchange. A rangefinder and riflescope system that uses ballistics, environmental conditions and Bluetooth to illuminate the exact holdover dot. Download the free BDX App for iOS or Android to setup ballistic profiles. Brand Sig Sauer Electro-Optics Category Rifle Scopes Magnification 4.5-14x Tube Diameter 30mm Model Sierra3 BDX 2 Reticle Illuminated BDX-R1 Firearm Type Rifle Wireless Capable Yes Finish Black Anodized Field of View 6.70 - 19.90 ft @ 100 yds Adjustment Size .25 MOA Focal Plane Second Objective 50mm Brightness Settings 10 Daylight Eye Relief 3.35" - 4.21" Battery CR2032 Windage Adjustment 55 MOA Length 12.75" Proofs Fog / Waterproof Parallax Adjustment 100 yds Elevation Adjustment 55 MOA Optic Coating SpectraCoat Weight 24.90 oz Coating Type SpectraCoat Exit Pupil Diameter 8.90 - 3.60mm Windage Elevation Adjustable Diopter Adjustment + / -2