ergonomics

should be compatible with win 10 and at least 4000 dpi with good ergonomics.

I prefer atleast minimal ergonomics for mouse and keyboard so that they are helpful and not frustrating to use. I recently got this replacement kit mouse from lenovo. And the scroll wheel is just pathetic to use. Its hard plastic with no threads and just slips.. (see attached image). Wondering...

I wanna buy a new phone for my mom.please suggest me one.i'd like to go for a SE phone or a s40 nokia phone with a long battery life and good ergonomics..all other brands are not my choice.is there a flap phone in this category?