Ikea Desk Lamp You can easily direct the light where you want it because the lamp arm and head are adjustable. Light bulb sold separately. IKEA recommends LED bulb E12 400 lumen globe opal white. Use an opal light bulb if you have an ordinary lamp shade or lamp and want an even, diffused distribution of light. May be completed with other lamps in the same series. Provides a directed light that is great for reading.