72 LED color changing spa light replaces most incandescent spa bulbs. Seven solid colors--red, green, yellow, blue, purple, aqua, white OR choose from four color changing modes that progresses through all of the solid colors: rapid party disco mode; appx 20 second mode; appx 5 minute mode and an appx 30 minute mode. The colors and changing modes are controlled by your wall switch. Energy Saving--only 7.5 watts! The last spa bulb you will ever need--lasts up to ten years of continous use. Fits most Spa fixtures. Also, if you're using R20, R30 or PAR 38 bulbs now, the SpaBright 72 is an excellent energy efficient replacement choice. Multiple SpaBright lights, and PoolBright Lights, on the same circuit can be easily synchronized to operate in same mode.