The all-new SIERRA4-BDX riflescope simplifies shooting at distance by connecting to BDX-equipped rangefinders to deliver an illuminated holdover dot specific to your target distance ballistic performance and environmental conditions. With a digital focal plane and 194 LED hold points the SIERRA4-BDX brings unmatched accuracy connectivity and clarity to the field. – BDX Ballistic Data Xchange Technology: Pairs with KILOBDX rangefinders to calculate and display an exact holdover dot using real-time ballistic and environmental data. – BDX-R2 Digital Reticle: 194 individually controlled LEDs on a digital focal plane for hyper-precise aiming. – SmartBDC Technology: Choose from 9 onboard ballistic groups or customize your setup for total control. – Advanced Bluetooth® Antennae: Improved connectivity up to 30 yards perfect for shooter-spotter pairs when terrain dictates your position. – Rugged Performance: Waterproof (IPX7) 30mm main tube and ultra-clear optical system with up to 95% light transmission. – Specifications – Magnification 4-16x – Objective Lens Diameter 44 mm – Overall Length 12.0 in – Weight 22.7 oz. – Maintube Diameter 30mm – Total Elevation Travel >70MOA – Total Windage Travel >70MOA – Travel Per Rotation 25 MOA – Eye Relief Low (IN) 3.24 – Eye Relief High (IN) 2.44 – Field of View Low (FT @ 100 Yards) 0.8- 3.33 – Field of View High (FT @ 100 Yards) 1.25-5 – Diopter Adjustment Range +/- 2 – Color Black – Mount Included No – Battery (2) CR2032 – Focal Plane Digital – Reticle BDX-R2 Digital Ballistic Reticle w/194 LEDS – Illumination Yes