The Ghost Hunter 5x50 All Weather Digital Night Vision monocular is designed for observation at night time. The monocular can operate both in the passive mode (without infrared (IR) illumination) and in the active mode (with IR illumination). The IRilluminator is recommended for use in low-ambient light conditions or total darkness. The Ghost Hunter 5x50 All Weather Digital Night Vision monocular is suited for close range to long range observation. The Ghost Hunter 5x50 All Weather Digital NightVision monocular is tailored perfectly for a wide range of applications including: Search and rescue, nature observation and hunting.