I found one arrived broken. The spring part was out so the earring was useless. Also while trying one out the tiny piece that keep the spring in broke off and that was no long usable.

It was somewhat difficult for me to place them on my ear(personal opinion, due to the spring mechanism).
Due to the spring though they were too tight on my ear lobes which caused my ears to just go red. I would advise for people with sensitive or easily redden skin to use.

Overall for the price of the set is say it was decent.
Not for long use/wear (personal bias).