The writing in the ‘about’ section of the site makes very little sense. It has many of the hallmarks of a scam site.
Anything claiming Night Vision capability for that price is a con and/or requires the user to carry an infrared light source the size of a WW2 searchlight.
I think Elvis has left the building… 
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Ok I’ve bitten. Flagged.
I liked @Shiba 's answer the best although @RicePudding 's backend gave me pause for thought.
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Thought that from the start…”optics” smacks of botspeak to me.
Or English not first language?
I just tend to cast a quick eye over them to check if they’re 25 or 35ml and move on if it’s the former. I preferred the old days when it was a quarter gill.
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