Brightness Create a home office. SKYLEO desk lamp with 1300 lumens (112 lamp beads), various brightness levels (3000~6000K) and CRI≥90. Size All parts of the LED desk lamp can be moved and adjusted, the swing arm stands up to a maximum working height of approximately 80 cm, even the lamp head (43 cm long) can be rotated to avoid the light shining directly into the eyes, large range of motion. Installation The desk lamp was easy to assemble and hold. Very convenient for the home office, it clamps to the edge of the desk which frees up space. The arms extend and rotate as needed. Not only as a desk lamp, but illuminates the ceiling and is used as a dimmed room light when the child is sleeping. Use Control The study lamp is easy to use, the touch button works perfectly every time. The touch button to switch between brightness levels is very cool. Can be connected to any 5V/2A USB interface. We focus on environmental protection and do not include adapters in the product packaging. Timer and Memory When you press the timer function, the blue indicator lights up and the desk lamp automatically turns off after 45 minutes and will retain its last brightness setting the next time you turn it on. The USB cable is 180 cm long for daily use.