The Nikon BLACK RANGEX 4K Rangefinder gives you a long range of over 2 miles with the speed, precision and consistency needed for long range shooting. HYPER READ technology gives you fast and accurate measurements while the OLED display is highly visible. FeaturesFully Multicoated OpticsHYPER READ for a quick and stable measurementID (Incline/Decline) Technology8-Second Sustained Measurement; 4,000 yard rangeTru-Target Priority System to switch between first target and distant target modesWaterproof, Fogproof; nitrogen purged and o-ring sealedOLED Displayand Wide Field of View; highly visible red display5-Year Warranty Nikon BLACK RANGEX 4K Rangefinder 16557