During the day, OIO Bulb gives off a full rainbow of light: violet, blue, green, yellow, orange, and red – mimicking the wavelengths of the sun. The strong blue helps your body feel awake and alert. At night, OIO Bulb shifts to Evening Mode and purposefully removes the blue light; just like what happens over the course of a day in nature. The OIO Loop will visualize this change and show an obvious gap during the evening where the blue in the rainbow disappears. This change helps your body know it’s time to relax and get ready for sleep.