Great new concept, but leaves some to be desired.
Pros- covers the eyepiece and keeps it from getting scratched while in pack.
Good new idea to give phoneskope competition.
Good for newer phones with a bigger extended camera
Everytime you get a new phone you just need a metal plate and a cheap phone case to make work(don't have to buy an expensive bulky phone case
Cons- pretty Expensive, metal plate on phone can affect wireless charging/or phone accessories like pop socket etc, doesn't fit all spotting scope eyepieces(ex. Didn't work on my 11-33x Vortex RZR, eyepiece too small to fit S1. I contacted them and they don't know if or when they'll make a smaller eyepiece in the future.
Overall I'd give it 4 stars