The lights are very bright, at least brighter than normal halogen bulbs brands. Pears find its application at the desk, the lamp has 4 versions, but these bulbs I just need. 2 The light color is blue, similar to those lamps that have been taken at that time to houseplants to give a little more light. Is not for everyone, but who must also do clerical work at night is hereby well advised. In the normal white and yellow translucent lamps is often the highlighter unrecognizable. This blue light yellow highlighter begins even to glow. So very helpful for my taste.