Sig Sauer SOK18601: The BDX Kilo rangefinder features a Lightwave DSP digital rangefinder engine, Hyperscan with four (4) times per second scan rate, RangeLock and the Lumatic auto-adjusting display. Download the SIG BDX app for Android or iOS smartphones, pair the Kilo BDX rangefinder, set up a basic ballistic profile, and you're ready to shoot or hunt. Once you are in the field, range your target, and the Kilo BDX rangefinder will utilize onboard Applied Ballistics Ultralight to instantly send your dope to the scope via Bluetooth. This 1800 model has a black finish and 6x magnification with a 22 objective.