1. Universal translator * 2. Scale 3. way to measure calories 4. Always listening so I can ask it questions and have it google them for me and read out the answers. All without taking it out of my pocket.

* Honestly I'd be happy with a good enough approach here. Just recognize whatever words it can (even 10% or less) and show the google translate translations scrolling down my screen. If I can just discern the subject of a conversation once in a while, I'm still way better off than understanding nothing.