Introducing one of the most sophisticated Rangefinders on the market, combining exceptional range with advanced features and incredible speed. At its core, the KILO4K is a classic Rangefinder with a robust 4,000-yard range and an amazingly fast Lightwave DSP engine that returns 4 ranges per second on targets over a mile away. It features onboard sensors that measure temperature, pressure and humidity for accurate real-time ballistic calculations, and shows all the info via a beautiful OLED Lumatic display. The KILO4K improves upon the KILO3K with the addition of Optical Image Stabilization technology, which delivers a crisp, clear image free from any hand shake or vibration. But that's only about half the story. The real heart and soul of the KILO4K is its ability to feed data directly to your BDX scope (sold separately). In BDX-U mode, the KILO4K utilizes your ballistic profile and measures environmental parameters in real-time to instantly calculate precise windage and elevation solutions in either MOA or MILs. This information is displayed in the Rangefinder-and is also communicated via Bluetooth to any paired BDX sight to provide the exact illuminated holdover aiming point. Pair it up with a compatible optic, and you have everything you need to take your best shot. From ranging, to targeting, to impact, SIG SAUER optics connect the dots. SIG SAUER Electro-Optics Infinite Guarantee SIG SAUER Infinite Guarantee is an Unlimited Lifetime Guarantee that is fully transferable. There is no time limit, no charge and no receipt required. SIG SAUER will repair or replace your optic in the event it becomes damaged or defective, at no charge to you. If SIG SAUER cannot repair your product, they will replace it with a product in perfect working order of equal or better physical condition. It doesn't matter how it happened, whose fault it was, or where you purchased it. 6x magnification 4,000-yd. max detection range Red TOLED Lumatic disp