I have used a power drill more than once before, but it doesn't have "the number setting" like the one in the picture does. (Instead it has a single toggle labe

I have used a power drill more than once before, but it doesn't have "the number setting" like the one in the picture does. (Instead it has a single toggle labelled "900" and "2400" - as well as the on/off trigger) To me, it's not even intuitive if I'm supposed to try and answer the question or not.