Blinking & Musical Santa Hat Set of 5 Assorted Blinking & musical santa cap with assorted details. Heart, tree & star. Press the button to activate blinking and music. When you press a button the lights blink and it plays a medley of abbreviated Christmas jingles--Jingle Bells, Santa Clause is Coming to Town & We Wish You a Merry Christmas. Perfect for office parties or Christmas parties! 22 inch circumference. Sized for young adults and adults.