I received these lights in exchange for an honest review.  They each take 3 AA batteries per light. They have double sided sticky tape or screws that you can use to attach them to pretty much anywhere.  You can turn them on and off by pressing the lens or using the handy dandy remote control. The remote also allows you the ability to dim the lights and also to put them on a timer. I really like the lights.  They are easy to use and work great! I would recommend them to anyone!