Love these. What I particularly like is that I can run it on batteries or with a small, cheap and light power supply. (If using a power adapter, make sure it has the correct center pin diameter - some power adapters are designed for a 2.5mm pin and others for a 2.1mm pin.) With a large Sony NP F battery light up these lights work . for several hours before it begins to fade. The color seems good. I am deducting a star because they are not as strong as I would like them to be. I like colored magnetic filters; I wish they had gel frames.