Summary: I think they should put the receiver inside a small box. hopefully i can find that tiny receiver within a few days.
Pros: Nano receiver so small!!! Good quality mouse Very solid feeling!
Cons: Doesn't have chance to use it yet. The nano receiver is so small that disappear right after i open the package. I guess it jump off when i was opening. I don't even have a chance to see the receiver. It just disappear.