What buttons? Pretty much every microwave I've ever seen looks like this[0] - timer + power setting. Even our kitchen at work which has some really fancy microwaves only offers time + power, nothing else. The ones full of buttons on the front are from like....American movies, not something I ever see in real life :P
[0] https://asda.scene7.com/is/image/Asda/5054781247296?hei=532&...