It fits fine. I personally found the light insufficient for my needs, I had to move it around to see the whole page.
I eventually settled on a light that used a full spectrum CCFL light and AA batteries (I use rechargables 'cause it's a bit of a battery hog). The one I bought is made by MightyBright, but Verilux also makes one, and its design is perhaps a bit better for the Reader. If you're interested, a forum search for Verilux, should find you pix and details on it in short order.