13.3"
Apple MacBook Air (2017) 13.3" Intel Core i7 2.2GHz / 8GB / 128GB
13.3"
Apple MacBook Pro (2017) 13" with Touch Bar and Touch ID / Intel Core i5 3.1GHz / 8GB / 256GB
The size of the screen (measured diagonally).
Screen size: is this important to you?