A lot depends on what you want and expect. They are light amplifiers, so no light no vision. The IR illuminator will work at short range, it is only a torch. They usually operat in the very near IR (hence the IR illuminator) so you will see no colour just greyscale in the colour of the screen phosphor. It is also likely that any light source will overload the device if it is in the field of view, a bit likbeing dazzled by headlights, though it may also do damage to the amplifier. Also by their nature (you cannot use them in daylight conditions) they cannot be easily tested in the shop unless they have a darkened room.
When it comes to night vision devices you get what you pay for. Field of view, effectiveness in light magnification and useful operating life are the factors to consider. There is a very large difference in the capabilities of the equipment to 'see' objects in low light conditions. At the cheap end they are not much better than good (young) night vision. At the top end you can see very well in almost pitch black. However, the better the equipment the quicker its capabilities degrade. Consequently, good stuff in regular use can go out of spec within 18months and need replacement intensifiers. Having said that, they would still perform better than new cheap units.
In my book they are an excellent toy to have about but unless you are going to spend a fortune don't expect outstanding results.
I have one, and it's only good if you want to see, but not be seen. If you want to see better at night buy a good torch. I got one because I thought I would be able to see without spoiling my night vision, and it works insofar as you have to keep one eye closed when you use it, but you could use a torch and cover one eye I suppose.
from lidal
The one I got is different to the one your looking at it was £109 made by bresser it works in total darkness by using infrared or under stars or moon light again it works fine there are two buttons, its draw back is that the magnification is 1.5
I decided to get one after trying to sight a temp marker in rough conditions dark and a fast boat bearing down on us.
Just been and they are not in until next week, so is it worth the punt even though SWMBO might kill me?
Guess it might be handy for non boaty stuff too.
only nipped in to look and came out with 60 quid less in my wallet!!!
I have one of the Bressers (from Lidl or Aldi - I don't remember which). You are unlikely to get zero light outdoors - you will indoors or in a cave, but the IR will work for that sort of range anyway. As others have said, you get what you pay for.
It has some distortion, especially around the lens edges & it is monochrome green. In terms of night vision, it is so bright it will destroy your night vision in the eye you are using, but you do still have the other eye, and you will have seen what you were looking for. I have not used mine in anger on the boat as there is usually enough ambient light for me to use 7x50 glasses and they do not affect my night vision. But it is there if it is needed.
I have used it in the garden, but I usually trip over something out of vision & frighten any wildlife away before I can spot it. I would class it as a useful plaything rather than an essential night aid. But I ain't selling it, so perhaps that helps your decision.