This adaptor allows my spotting scope to be close at hand, and the mount is sturdier than the tri-pod that came with my scope. I like the added feature of a picatinny rail for quickly adding other optics if desired. I haven't used the smart phone adaptor yet, but I can see how it could be useful.
Pros: Sturdy construction
This review was written in the old system and had content requirements that are different than reviews written today.