• Set of Twelve 6" LED hanging icicles with 24/6hr. timers
• 4 White Dripping LEDs in each icicle.
• CR2477 batteries included
• 12 Extra replacement CR2477 batteries are also included
• (Each icicle is individual, and each has its own hook & suction cup battery case and timer.)
• The hook and suction cup on the battery compartment allows you to hang these icicles from any tree, or window.
• They'll light up on one set of batteries for almost a month; turning on and off by themselves at the time you designate.

Click the link to see a video of the product.
http://www.youtube.com/watch?v=Gpz3bWE1U_I