This USB reading lamp adopts high lumen efficiency Philips LED enables high brightness at low consumption, and that also provide better Color Rendering Index performance compare to normal LED,Which ensure clearer vision. Portable gooseneck design let it easy to bent so any position you like and fold into small size to convenience for carry and storage.power supply by USB, ideal for laptop or combine with power bank become a desk lamp Emergency light for travel Camping Hiking Reading Writing.