The NV 5x60 Night Vision Monocular is remarkable for its high light- gathering capacity and stunning high power magnification that far surpasses the capabilities of standard night vision devices. Due to a the large optical diameter of the objective lens (60mm) and enhanced contrast transfer function, the images produced by the NV 5x60 are is bright and crisp with a resolution of around 40 lines/mm. The housing of the unit is made of highly durable plastic. The NV 5x60 is equipped with a built-in IR illuminator for observing images in complete darkness and also when there are insufficient levels of natural illumination at night (to increase quality and range of observation).