Make the bottle part of your next party with the Light Up Bottle Show Stopper. Replace any bottle top, cork or cap with one of the stoppers and then watch as your bottle lights up and starts to change colour in time to the music. Each box contains 4 different coloured stoppers in red, green, white and blue. Each stopper has 3 performance modes which are music and sound responsive, constantly on and strobing effect. Requires 2 x CR2032 batteries (included)