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How does BDX work?

The BDX rangefinder and riflescope system is simple, fast, and intuitive.  Simply download the “SIG BDX” app available for Android or iOS smartphones, pair the KILO BDX rangefinder and SIERRA3BDX riflescope, set up a basic ballistic profile, and then you’re ready to shoot or hunt.  Once you are in the field, range your target as you normally would, and the KILO BDX rangefinder will utilize onboard Applied Ballistics Ultralight™ to instantly send your dope to the scope via Bluetooth.  Using your basic ballistic profile the ballistic solution is calculated for your target and will instantly illuminate on the BDX-R1 Digital Ballistic Reticle with windage and elevation holds in the SIERRA3BDX riflescope.  A blue LED on the riflescope power selector indicates that the BDX system is paired, and when the reticle has received new ballistic holdover and windage data from the rangefinder.

Specifications for SIERRA3BDX 4.5-14x44MM

  • Magnification: 14 x
  • Objective Lens Diameter: 30 mm
  • Reticle: Digital Ballistic
  • Tube Diameter: 30 mm
  • Finish: Matte
  • Adjustment Click Value: 0.25 MOA
  • Additional Features: BDX
  • Included Accessories: Battery, Phone Application
  • Package Type: Box
  • Weight: 2
  • Eye Relief: Range 1.5 – 3 in
  • Length: 8 in
  • Color: Black
  • Reticle Type: BDC/Ballistic
  • Adjustment Type: MOA
  • Height: 6 in
  • Width: 2 in
  • Battery Type: 2032
  • Brightness Settings: 10
  • Weather Resistance: Yes
  • Parallax: Adjustable
  • Battery Life: 20,003 hours
  • Focus Range: 800 yds
  • Lens Material: Glass
  • Reticle Focal Plane: Second Plane
  • Optical Coating: HD
  • Attachment/Mount Type: Ring
  • Water Resistance Level: IPX-7

Specifications for KILO1800BDX

  • Finish: Rugged
  • Measurement System: Yards
  • Maximum Range: 2000 yds
  • Package Type: Box
  • Included Accessories: Battery
  • Magnification: 6 x
  • Objective Lens Diameter: 22 mm
  • Eye Relief: Range 1.5 – 3 mm
  • Weight :4 oz
  • Length: 4 in
  • Minimum Focus Distance: 4 ft
  • Color: Black
  • Minimum Range: 1.5 yds
  • Water Resistance Level: IPX-7
  • Width: 2 in
  • Battery Type: 2032
  • Optical Coating: HD Glass
  • Operating Temperature: Range -40 – 140 Fahrenheit
  • Battery Life: 20,000 hours
  • Weather Resistance: Yes
  • Range Response Time: 0.25 seconds


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