Very good at this price point - Stealth Cam Digital Night Vision Monocular w/ IR Filter

This is a $100 IR monocular - keep in mind that many IR optics are in the $1000 range. I saw a review stating that you cannot use it through a window. Keep in mind this is much like a normal monocular with an attached flashlight... it’s just that the “flashlight” is a low power IR illuminator and the monocular is sensing IR instead of daylight. Any glass will reflect the IR back at the monocular as opposed to illuminating things outside. The IR illuminator is low power (about 1 watt). If you were to use a more powerful illuminator in conjunction with this monocular, clarity and distance would be greatly improved. Overall, I am very happy with its performance. I was able to see about 250’ clearly after focusing the monocular before my line of sight was blocked by trees. This would be good for spotting deer or hogs at a feeder across a field. Well worth the money.