This has some of the best eye relief of all the monoculars I own- great for people (like me) who wear eyeglasses.
Optical clarity and brightness is so-so, but what do you expect for the money? It's fine for casual daytime use, and concerts and such.
Mine did have an issue with the extendable rear eye cup/shade- it kept popping off after a while. I ended up using CA glue (superglue) to glue it in place permanently. So far so good.
For the money it's hard to beat- and if you lose it or drop it, you're not out a ton of money.
Pros: HUGE field of view- great eye relief for eyeglass wearers
Cons: extendable eye cup broke on mine- glued back on, so far so good.
This review was written in the old system and had content requirements that are different than reviews written today.