I bought a genuine Otto light bulb at Lowe's and it fit right into the lamp I have over the sewing machine. It made a huge difference, so when I saw an Otto light at BJs for $19.99, (table lamp) I jumped on it. I move it downstairs when I need extra lighting for sewing bindings at night. I also use "cheaters" to read, but use a higher power for sewing. That seems to help, too.