The smart bar 39 white uses 16 white and 8 amber 3 watt led light bulbs. With the IR remote control you can adjust the white light color temperature between 2800k and 6000k. This fixture can be fully DMX addressed as well for stage lighting applications such as back drop washing. The fixtures dimensions are 40 inches long by 3 inches high and 3 inches wide. The light will produce an nice even wash of 40 inches wide by 50-100 feet long in the dark. The fixtures also have the ability to master and slave with the remote and there is dimming capability as well with the IR Remote.