The Sig Sauer KILO4K Rangefinder, the most advanced rangefinder in its class. Featuring SIG SAUER's Optical Image Stabilization (OIS) the KILO4K delivers a crisp, clear image free from any user-induced hand shake or vibration. The KILO4K is powered by Applied Ballistics Ultralite which is user configurable to your exact rifle and projectiles, onboard environmental sensors for real-time precision updates to ballistic solutions, a 4x scan mode for ultra-fast ranging at distance, and includes BDX 2.0 for Bluetooth communication with other BDX enabled sights and devices. For users looking for category-leading ranging performance and vibration-free image quality look no further than the KILO4K.FEATURES:Optical image stabilization for long-distance, razor-sharp imagingGen II lightwave DSP ranging engineOnboard temperature, pressure, and humidity sensors for accurate real-time ballistic calculations5 target modes; first, best, last, fog, extended range5 range modes; BDX-U, BDX-X, AMR, LOS, ArcheryDrop remote waypoints with BASEMAP appApplied ballistics UltraLite with complete ab bullet database, up to 25 bullet profiles, and 8 onboard ballistic groupsBDX 2.0 enabled with low energy, long-range BluetoothIPX-7 waterproof runs off cr123 lithium battery and integrated tripod mount