Specifications Color: blue Size: 420 x 120mm Voltage: 36V Light color: white light Light source type: 16 LED lamp beads Control method: touch control Attachment method: clip Package includes 1 x reading lamp 1 x USB charging cable LEDs with eye care light source bed clamp lamp bed white power cable with LED lamps. LED clampable desk lamp can emit natural and non-flickering light that does not hurt or strain your eyes. Perfect for reading, studying, working, drawing, sleeping and so on. Reduce eye fatigue and protect eyes. 3 brightness levels adjustable to optimally adapt to your needs. Press the button once to select the color temperature and long press to adjust the brightness. The freely twisted tube can be rotated 360 degrees and offers you the best viewing angle. With the non-slip silicone pad on the base, it can also be placed smoothly. Clip-on design with non-slip clamp base or bracket. The maximum width the clip can open is 6 cm. You can mount this reading lamp on many positions such as a book, desk, headboard, shelf, bookcase, wardrobe, music stand, piano, and computer. You can also put it on a table as a normal table lamp. Widely used: LED clip on USB reading light provides a uniform and wider, evenly spread lighting area than other LED book lights, which is perfect for student dormitories, offices, bedrooms, children's rooms, kindles for reading, studying, etc.