[This review was collected as part of a promotion.] These lights strips come with two strips per box and a splitter. They are app controlled or you can use the button on the cord. The app is lightly tricky to use to figure out how to get the lights to sink with music. To install the lights I pulled the sticky tape off the backside and stuck it to a clean metal surface. They stick pretty well, but pulling of the protective backing wasn’t easy and parts wanted to take the tape with it. They turn on great easily and have different color settings you can choose from. In all easy to install and easy to use for the most part. Not sure if the sticky tape will not work as well in the future but so far so good.