The Digisight Ultra utilizes proprietary software, cutting-edge electronic components and signal-processing algorithms to deliver one of the industry's highest values of sensitivity in night time. The result is a device offering flawless passive-mode performance in deep twilight, even night, without switching on IR illumination. High nighttime sensitivity, high resolution display and sensor, high magnification and a powerful built-in IR Illuminator for operation in total darkness make the Digisight Ultra the perfect tool for target detection at distances of 500+ meters.