The exclusive light spectrum inside the Get In Sync Color Tunable Recessed Downlight is designed to optimize and maintain a healthy sleep-wake cycle because it automatically adjusts to a warmer sunset-like light color when you dim it at night, helping you avoid blue spectrum light at night. Fully adjustable with any standard dimmer, Get In Sync simulates sunlight, from sunrise to sunset. Turn-up to full brightness to feel more energized, alert, and focused during the day; dim-down in the evening to feel calmer and more relaxed, to help your body naturally prepare for sleep. Exposure to harsh "blue spectrum" light negatively impacts health and well-being. The only true circadian home lighting that's scientifically engineered for optimal wellness benefits that you can feel in just 20 minutes. Includes 12 recessed retrofit lights to easily fit into 5" or 6" housings.