Red LED Light Up Suspenders will make you feel fancier & flashier than anyone else at the party. LED Suspenders are loads of fun at prom, weddings, theme parties and glow parties. To activate your LED Suspenders, press the button on the battery house, located at back of the suspenders. Activate 1 of 3 light modes: flash, blink & steady. 2 CR2032 batteries are included and replaceable.