LEDHOLYT 5w Table Desk Clamp White Flexible Neck Sliver Head Light USB Uses LEDs, which consumes up to 80% less energy and last 20 times longer than incandescent bulbs Provides natural, non-flickering light for stress free productivity and enjoyment Suitable for every place ,can use in home, office, dorm, or travelling,can use for reading, study, piano, bedside, and general light. The light can be contacted the power bank and computer with USB wire Flexible gooseneck tube to adjust its height and angle, 15 long life LEDs, ultra portable and lightweight