I found this on clearance sale and though it's not included in my shopping list, I still bought it. When I got home, I tried and it's cool. I turned off the light and checked how bright the light, it's super bright. Hubby asked me why I bought it since I can just turned on the light or the lamp shade when I'm working on the computer. I told him that I needed it whenever I put our son to sleep, while waiting for him to fall asleep, I could bring my laptop and do some post for my blog with the help of the usb laptop lamp. Besides, I just bought if for $3.99.