Forgot to mention that for my eyes anyway, the See All is in perfect focus, unlike irons or even red dots these days, a huge plus for me. I use 2.75-3.0 readers and a1.0-1.25 shroens up my distance view on most days. You do need to use both eyes for best results.
Also, the See All sights are battery-free, using a light-gathering polycarbonate lens and tritium on some models. They claim a 15-20 lifespan for the radioactive ones.
