A:AnswerThis keypad is compatible with a MacBook Pro 13 inch early 2013 laptop I have. It also works with a 2013 Mac mini I have. I believe it will work with with 2013 27 iMac. Also, just contact Aplle and ask them.
A:AnswerI think it depends on how much it is used and whether one recharges it with the cable that came with it. I have one that is still working after about ten years.
A:AnswerI bought this for use with an iMac. It came with a smaller keyboard that didn't have the numeric keypad like this one. The wireless apple mouse would be enough since you macbook Air already has a built in keyboard
A:AnswerI’m guessing so because it’s Bluetooth, but you won’t want to because apple and windows use different keys for different things. Example, there’s no control key on an apple keyboard.
A:AnswerOnly Apple can give the best answer, but knowing a little about metal processing I MIGHT be able to give an educated guess. The material used in this keyboard is an "alloy " aluminum. To get the color, the chemistry and manufacturing process is different in this metal, versus the silver aluminum appearance on their other products including the i-Mac. It actually started with the i-Phone, then was used on the i-Pad products, and more recently the i-Mac Pro. This keyboard and mouse now come in silver and space gray giving it a great appearance.