3 color temperatures and 5 brightness levels: 3 kinds of color temperature, warm light (3000K), warm white light (4500K) and white light (6500K). Each CT has 5 levels of brightness, allowing 15 lighting modes to be created. Meets all your needs. Clip on the bed or headboard and reading in bed, comfortable light brings you a comfortable life No flickering and eye protection: The reading light with 5W premium quality LED makes it easy to dim. saving up to 80% of the energy consumed by traditional lamps, gives you the same brightness. No flickering, no dark spots, no ghosting and low HEVV eliminate visual fatigue caused by the stroboscopic effect of traditional light sources. 360 Targeted and Flexible Lighting: the clamp lamps concentrated illumination emits enough light for you to read books without affecting others by the dazzling lights. With the 360 flexible gooseneck, you can optimize your light source and easily adjust the lighting position and lighting angle. Auto-off (1 minute) and memory function: If you press the on/off button for 2 seconds, the blue light will flash and the clamp light will automatically turn off after 1 minute. The clip desk lamp can automatically remember the brightness setting of your last use. When you turn it on again, you keep the last brightness and the last mode set. Long life and solid design: 30,000 hours of life saves you years of maintenance and replacement. The width of the solid clip is 2.75 inches. You can hang it on the desk, headboard or wherever you want.