A sleek, modern design, the Zodiac LED Arc Lamp supports wellness by syncing your indoor lighting up with your circadian rhythm. A sleek, smart touch switch allows full control over 5 different color temperature modes and 5 different brightness levels offering an infinite range of lighting selections. By adjusting your lamps color temperature throughout the day you can simulate the natural progression of the sun, helping to regulate the bodys internal clock to improve sleep habits and overall personal health. A cooler color temperature during the day will keep you alert and active while a warm, dim glow at night will ease you right into a good nights rest. The LED lights are integrated into the lamp and are not replaceable, but last 50,000 hours. This lamp is made up of brushed steel metals, exuding minimalist, modern style. All Adesso lighting product is either UL or ETL listed, meaning that it has been tested and approved to meet the government-regulated safety standards for the USA.