LED Bottle Stoppers are a party's best friend: Pop some bubbly and need to preserve it for the next couple of events? Jam these decorative Bottle Stoppers in your finest bottled beverage and watch as your guests flock to them, ready to have a great time. Let the good times flow...and keep flowing with our Light Up Bottle Stoppers. To activate, twist the Lighted Stopper tight to turn the lovely light on. 2 CR2032 batteries are included and replaceable.