What should i care about when buying a haircut machine ?

Question

I want to buy a machine so i can easily can cut my hair at home, and so i can customize it, etc.

What shout i care about when buying one? Characteristics, etc.

Or do you advice me one ?

Answer 1

make sure it works

Answer 2

Go for one with really good reviews, that way you can't go wrong x  

Answer 3

make sure it is not a lawnmower.