Have built in a salt lamp, it indicates. Was hesitant at first because "only" 1.4 watts and 100 lm. However, I was informed after turning better. The light strikes the previously built 15 Watt Funzel to lengths without but to be uncomfortably bright. The reddish-brown color of the salt crystal provides a permanent, diffuse, warm light. A light that you can now also leave with a clear conscience a little longer "burn".