Review on Yueton Aluminum Coated USB LED Light Lamp Socket Spotlight Flashlight White Light Base with Flexible USB Extension Cord Cable for PC Computer, Laptop, Power Bank, Versatile Use (Silver) by Rory Kelley

At least one-level light without switch. Other listings that do not include a gooseneck cord describe the light as 3 watts. I measured the current draw at 0.25 amps at 5 volts, so the actual output is 1.25 watts. Based on a comparison with known light output and current consumption I have concluded that the light output is in the range of 100 lumens which is good enough for use as a low power LED flashlight. The light is light enough to easily carry the cord on the gooseneck.