Home and Office USB Lamps Folded LED Desk Light Eye Protective Ball Bearing Night Light 18 LED bulbs. Size (Folded): 7"*1.7" (L*W) Special design: electronic calendar and alarm clock. Creative ball bearing design is more durable An easy-to-use touch panel to turn on/off, keep pressing to adjust brightness Provides natural, non-flickering light for stress free productivity and enjoyment Built-in rechargeable lithium battery, USB charging, safety, energy saving, environmental protection, convenient