USB Lamp, DC 5V: 8W desk work lamp with USB cable is very convenient, easy to connect to laptop, pc, computer, mobile power, adapter(not included), etc. Unable to load! Battery not included! Variable Color and Intensity: Black desk lamp with simple switches and function keys, which can adjust the light to 3 colors and 10 dimmable intensities (10%-100%) to meet different lighting needs. Dimmable bedside reading lamp for kids. Flexible Clip Lamp: The 38cm arm is 360 degrees flexible, so the height and direction of the light can be flexibly adjusted to always find the ideal position. The metal arm is flexible, but at the same time maintains its position. It is easy to fix on the table, desk, drawing board. The clip can be opened 3-5cm. Positioning in the dark: A dim blue light on the switch button allows you to find the switch in the dark. If you hold down the button for 2 seconds, the lamp will automatically turn off after 1 minute. The blue light will only turn on when the power is connected. Applications: This flexible LED gooseneck lamp with clamp is ideal for children's desk lamp, table manicure lamp, drawing lamp, reading lamp, task lamp, gaming lamp, tattoo/beauty lamp, eyelash extension lamp, sewing machine lamp, etc.7.5*10.5*39cm.