I don't have this version but I think I have the original one that didn't come with all the different heads. I use mine when I am doing applique to fuse the pieces to the background fabric - sometimes!! It does have a knob to adjust the heat. I don't like it for pressing open seams as it has no weight to it. I find myself pressing really hard with it. I just use my regular iron. I've had mine for about 5 years so I don't remember what I paid for it. I do remember I got it at Michael's with a coupon.