1.10,000 lux for SAD lamp - This therapy lamp offers a complete spectrum without UV (eye protection) for you to provide your daily boost of sunshine. 10,000 lux for a luminotherapy effective against winter depression, the troubles of the summer, the fatigue, and the stress of lag. 2.Powered for USB and compact design - Powered for a USB type C cable, can be connected directly to a computer or an external battery. Size compact (16 x 14 x 1 cm) with easy support for carrying and storing, adaptable to your portable computer, on the kitchen computer, on your office, and accessories. 3.Touch Control & Stepless Adjustment - With sensitive touch control button, built-in 3 color temperature modes (warm white/white) and adjustable brightness (2000-10000 lux). 4. Stepless adjustable color temperature and brightness by long pressing the touch control button, allowing you to change the brightness and color temperature as you like to provide the most comfortable environment. 5.Heals good things, makes people feel energetic every day, and effectively relieves fatigue, work fatigue, decreased vision and lack of sleep.