I was given the small one that you attach to a table. It is bright, just doesn't give me the light that I need. It seems to be concentrated in a very small area, not really what I need for aging eyes that need more than a 'spot light'. I know that they are preferred light, give off true light, the one I have is just too small for my needs. I have the overhead lights for both sewing area and when I sit to do hand sewing.