how far can you see using vikason w9 in total darkness

For the Vikason W9 , the listed viewing distance in complete darkness is about 350–400 meters , and one product listing describes it as “up to 400 meters.”

What that means

That range is the approximate distance at which you can detect objects in total darkness with the device’s infrared night vision. In practice, real- world visibility can vary based on object size, weather, and how much detail you want to make out.

Practical note

If you’re trying to identify fine details rather than just notice movement, the usable distance is usually shorter than the maximum advertised range.

TL;DR: expect roughly 350–400 m in total darkness, with 400 m as the claimed upper limit.