These LED lights are a must if you do any work in the dark-helps to light up the keyboard, a book, etc.  Plugs into laptop or any other device that has a USB connection!!  Approx. 7 inches in length.  Flexible so you can point them wherever you would like.  I have other colors available!!  And please take a look at my other items for sale!  I charge only $1 to ship each additional eligible item purchased!  Thanks!!