To read quietly at night without disturbing your partner or for typing on the keyboard of your computer (if it is not backlit).
It easily snaps like a big clothespin and 2 mini lights can be positioned as desired. Each has 2 LEDs that can illuminate more or less well. The button is above each lamp and just press it once to a led a second time to turn on the second LED and a third time to turn off.
Another significant advantage is what has a rechargeable battery via USB (and the cord is included)! It's really great because you can walk everywhere without worry.