To fill up landfills is inexcusable. Get this light stick because its reusable. Instead of tossing plastic that won’t degrade for centuries. When this light stick goes out you just replace the batteries. ; ; Acting like a glow stick, this handy LED piece operates on small, readily available AG13 batteries. You can use one set of batteries for up to 48 hours (depending on the color setting) and longer if you only turn it on for a few hours at a time. With the push of a button you can choose between 7 different flashing colors, including white!. This is very helpful for activities like camping, working in dark spaces, or reading during power outages. You also receive a sturdy lanyard already attached to the stick. The cord allows you to hang this piece from your tent or bike so you dont have to worry about losing it. Uses 3 AG13 batteries – included, replaceable. Stick measures slightly over 7″ and is approximately 3/4″ in diameter.