This is my powermate by Griffin Technology. It was a birthday present some time ago and when I first opened it I wondered whether I'd really use it, but now I wouldn't be without it. It can be programmed to do six things in each package - for example in Photoshop twisting the powermate zooms in on the photo, pressing it in explorer or Safari takes me back a page. I love it.... and the base glows this beautiful shade of blue!!