Do all the various buttons on the blender really do anything?

What drink are you attempting to make right now? Perhaps that would assist us in formulating an effective answer.

@Imadethisupwithnoforethought Probably not. It was a margarita, but it’s all gone now :D.

It seems to me it is a speed control for the blades. Each successive level just a few rpm’s higher. I don’t think the ingredients in the mix know the difference. At any rate it’s always a good plan to hold the lid tight,at any speed.