Size: 420 x 120mm Voltage: 36V Light colour: white light Light source type: 16pcs LED beads Control method: Touch control Attachment method: touch control Clip package includes 1 x reading light 1 x USB charging cable LED with eye protection light source bed clip light bed white power cord with LED lamps, LED clipable desk lamp can emit natural non-flickering light, no eye injury, no strain perfect for reading, studying, working, painting, sleeping, etc. Reduce eye fatigue and protect your eyes 3 adjustable brightness, best adapt to your needs Press the button once to select the colour temperature, long press to adjust the brightness Free twist tube can be rotated 360 for You can mount this reading light in many positions such as books, desks, bedside tables, bookshelves, bookcases, wardrobes, music stands, pianos, and computers You can also place it on a table as a normal desk lamp for a wide range of uses:: The LED clip-on USB reading light provides a uniform and wider, evenly distributed lighting area than other LED book lights, which is perfect for student dormitories, offices, bedrooms, children's rooms, kindles for reading, studying, etc