3 Color Temperature Modes: This professional clip on reading light features 3 color modes, 3000K warm light, 4500K daylight and 6500K white light. 10 Brightness Levels & 8 Watts: This clamp lamp features stepless dimming, 10 brightness levels for each color mode, total 10x3=30 illumination modes; this clip USB desk lamp sources are 48 eye-care LEDs, these bulbs are non-removable and non-replaceable, their life span is 50000Hrs, more than 11 years if it lights up to 12 hours per day, no blue light hazard, no flickering, no dizzy light, reducing eye fatigue. Ring Lamp with 3.5 Inches Diameter & 64 Inches USB Cord: For its big ring light head, this led reading light can be used as a make up light, tattoo light, or even conference light, it is 15 inches/39 cm from the clip to the ring head. 2 Inches Clamp Width & 15 Inches Flexible Gooseneck: The maximum open of this LED table lamp metal clip is 2 inches/5 cm, wide and strong clip. The clip light arm is made by metal durable tube, it is easy to twist the gooseneck without any noise and set the right angle and hold position firmly. Versatile Mounting Options: The strong metal clip with 2 inches maximum opening allows secure attachment to desks, headboards, bedstands, and various surfaces, providing stable and adjustable lighting wherever you need it. Worry-free Purchase: 24 hours email reply, with our amazing clip on desk light, or you can call it zoom lighting for computer and webcam light ring, we are 24 hours online to service for you, thank you very much for your order:)