Pentair IntelliBrite® 640121 5G Color Underwater LED Spa Light 120V 18W 50' Cord. IntelliBrite 5G automated color-changing pool and spa lights feature LED technology; the wave of the future in energy efficiency, lifetime value, quality of light, and controllability. With IntelliBrite 5G lights, combinations of individual colored LEDs are mixed and matched to achieve a vibrant spectrum of colors. These combinations are power sequenced to illuminate and cycle through colors at varying speeds, and in different sequences of color. Combined with a custom reflector and unique lens design, the IntelliBrite 5G lights offers super efficiency while being the brightest yet most energy efficient underwater LED light available.