10,000 LUX Full Spectrum UV-Free Natural Light:The SAD Light can reach 10,000 LUX intensity, simulates natural sunlight, does not contain ultraviolet rays, it is widely used in seasonal affective disorder, winter depression, sleep disorders, fatigue, shift work, jet lag. Personalized Settings, Color Temperature Dimming:This Sunlight Lamp provides 3colors of light (warm light/natural light/white light) and 5 brightness(1250lux,2300lux,4200lux,6500lux,7100lux), color temperature (3000K-6500K), so that you can change the color brightness and color temperature at will to provide the most comfortable environment. Built-in Timer Function, Easy to Use:Built-in automatic timer function, you can set the time mode to 15/30/45/60 minutes, dont worry about forgetting to turn off and wasting electricity, it is recommended to use 30 minutes to 1 hour every day. USB Power Supply Tablet Design:Powered by USB Type-C cable, it can be directly connected to computer or surge protector through USB port, modern tablet design comes with stand, stylish and easy to carry. Care and Cleaning: LED Daylight Lamp are made of high-quality materials and have a service life of about 50,000 hours, they can be used for many years with minimum care. You may need to use a mild non-abrasive cleaner and a soft cloth to clean the bulb regularly. No flicker, no radiation and anti-glare, can keep your eyes away from fatigue.