Transform the look and feel of your pool with the amazing color changes of the hi-tech Galaxy Inground Spa Light. This is a self-contained light that replaces your existing spa light, simply screw it in to your Edison-based niche. Then flip the switch on your light for a flood of mood altering color. The advanced LED light changes from white to green to magenta to blue, and has three modes that rotate through the spectrum of colors. Uses up to 90% less energy then your existing spa light and lasts up to 11 years!