Sig KILO6K HD Ballistic Rangefinder with Gen II Lightwave DSP ranging engine with extended range (XR) mode. Features onboard environmental sensors for real-time ballistic calculations; drop remote waypoints with base map app; applied ballistics ultralight with complete AB Bullet database, up to 25bullet profiles and 8 onboard ballistic groups and BDX 2.0 enabled with low energy, long range Bluetooth.